feat(iOS): enable hermes

[gkartalis]

This PR resolves []

Description

Re-enabling hermes on iOS to tryout the solution from sentry team.

Sourcemaps now work. Got rid of the culprit that was breaking our sourcemaps index.tests.ios.js that wasn't used anywhere 🤷‍♂️

related issue on Sentry

Also tested out the sourcemaps here after the removal of index.tests.ios.js to confirm the fix ✅

PR Checklist

• I have tested my changes on iOS and Android.
• I hid my changes behind a feature flag, or they don't need one.
• I have included screenshots or videos, or I have not changed the UI.
• I have added tests, or my changes don't require any.
• I added an app state migration, or my changes do not require one.
• I have documented any follow-up work that this PR will require, or it does not require any.
• I have added a changelog entry below, or my changes do not require one.

To the reviewers 👀

• I would like at least one of the reviewers to run this PR on the simulator or device.

Changelog updates

Changelog updates

Cross-platform user-facing changes

iOS user-facing changes

• enable hermes - gkartalis

Android user-facing changes

Dev changes

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[gkartalis]

It's alive https://artsynet.sentry.io/issues/4229264611/events/c2d6d829cf584456835e039b0950c52e/?project=5867225