corelib/integer_parsed... tests are failing on all JavaScript configurations.

[nshahan]

https://dart-current-results.web.app/#/filter=corelib/integer_parsed&showAll

These tests are in a confusing state:

• They are all failing on the JavaScript backends.
• Based on the test file names, it seems like they are intended for the VM only.
• Some of the results (linked above) look like they are multi-tests but unless I overlooked it seems like only corelib/integer_arith_vm_test.dart contains a multi-test comment.
• Confusing sets of VMOptions= at the top of the files, potentially from the migration away from multi-tests?

These files could use some cleanup and either should be adapted with expectations valid for all backends or have their requirements updated for the number semantics required by the expectations so they automatically get skipped accordingly.

cc @rakudrama @lrhn