feat(error_sampling): Populate sample_weight on errors from incoming sample_rate

[yuvmen]

sample_weight on errors is set as 1/sample_rate, using the sample_rate set on the event data. Set to None if no sample_rate exists.

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This PR has a migration; here is the generated SQL for ./snuba/migrations/groups.py

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:x: 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
235	1	234	6

View the top 1 failed test(s) by shortest run time

tests.clickhouse.test_native::test_concurrency_limit

Stack Traces | 0.014s run time

Traceback (most recent call last):
  File ".../local/lib/python3.11........./site-packages/_pytest/runner.py", line 341, in from_call
    result: TResult | None = func()
                             ^^^^^^
  File ".../local/lib/python3.11........./site-packages/_pytest/runner.py", line 242, in <lambda>
    lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11....../site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11....../site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 182, in _multicall
    return outcome.get_result()
           ^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11.../site-packages/pluggy/_result.py", line 100, in get_result
    raise exc.with_traceback(exc.__traceback__)
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 167, in _multicall
    teardown.throw(outcome._exception)
  File ".../local/lib/python3.11....../site-packages/_pytest/threadexception.py", line 92, in pytest_runtest_call
    yield from thread_exception_runtest_hook()
  File ".../local/lib/python3.11....../site-packages/_pytest/threadexception.py", line 68, in thread_exception_runtest_hook
    yield
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 167, in _multicall
    teardown.throw(outcome._exception)
  File ".../local/lib/python3.11....../site-packages/_pytest/unraisableexception.py", line 95, in pytest_runtest_call
    yield from unraisable_exception_runtest_hook()
  File ".../local/lib/python3.11....../site-packages/_pytest/unraisableexception.py", line 70, in unraisable_exception_runtest_hook
    yield
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 167, in _multicall
    teardown.throw(outcome._exception)
  File ".../local/lib/python3.11....../site-packages/_pytest/logging.py", line 846, in pytest_runtest_call
    yield from self._runtest_for(item, "call")
  File ".../local/lib/python3.11....../site-packages/_pytest/logging.py", line 829, in _runtest_for
    yield
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 167, in _multicall
    teardown.throw(outcome._exception)
  File ".../local/lib/python3.11.../site-packages/_pytest/capture.py", line 880, in pytest_runtest_call
    return (yield)
            ^^^^^
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 167, in _multicall
    teardown.throw(outcome._exception)
  File ".../local/lib/python3.11.../site-packages/_pytest/skipping.py", line 257, in pytest_runtest_call
    return (yield)
            ^^^^^
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11........./site-packages/_pytest/runner.py", line 174, in pytest_runtest_call
    item.runtest()
  File ".../local/lib/python3.11....../site-packages/_pytest/python.py", line 1627, in runtest
    self.ihook.pytest_pyfunc_call(pyfuncitem=self)
  File ".../local/lib/python3.11....../site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11....../site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 139, in _multicall
    raise exception.with_traceback(exception.__traceback__)
  File ".../local/lib/python3.11.........................../site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../local/lib/python3.11....../site-packages/_pytest/python.py", line 159, in pytest_pyfunc_call
    result = testfunction(**testargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../tests/clickhouse/test_native.py", line 82, in test_concurrency_limit
    assert connection.execute.call_count == 2, "Expected two attempts"
AssertionError: Expected two attempts
assert 1 == 2
 +  where 1 = <Mock name='mock.execute' id='140535408183056'>.call_count
 +    where <Mock name='mock.execute' id='140535408183056'> = <Mock id='140535403811664'>.execute

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[yuvmen]

@volokluev hey Volo, thanks for the review! I actually had to add some stuff and fix a few tests, would appreciate another review just to make sanity check, thanks