`attachStacktrace` enabled by default on the JS layer

[marandaneto]

Description

Android and iOS have it enabled by default.
Its disabled by default on JS and RN inherits this option from JS when events are captured in the JS layer.
Double-check if this issue is fixed as well.
Amend the docs https://github.com/getsentry/sentry-docs/pull/2815/files

[krystofwoldrich]

#2131 is fixed, but the stack trace is sent in the exception with the message. Correctly it should be in the threads

[marandaneto]

@krystofwoldrich can we somehow monkeypatch the fix directly into RN?
Looking at the v8 milestone on JS, not sure about the timeline, might be a bit of stuff and this is going to be after our v5, so we'd need to do v6 to add this breaking change.

[krystofwoldrich]

For sure we can fix in in RN and remove the fix after upgrading to v8.

@marandaneto When we release RN v5, won't we have to release RN v6 anyway because of changes in JS v8.