Speed up attachStacktrace
Description
Following #2573, refactor SentryStacktraceBuilder or sentrycrashsymbolicator_symbolicate to use dladdr.
See this discussion
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Using dladdr is way faster than using our own version of dladdr, which is async safe and we only need when the application is crashes.
This could blow up easily and therefore we need to ensure that this change doesn't introduce any major bugs.
Done in https://github.com/getsentry/sentry-cocoa/pull/6562 since we removed dladdr