fix(modules): Modules loaders integration handles native error and event modules are prioritised over native

[krystofwoldrich]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

The modules loader would throw an error if the native layer was unavailable.
Also, the native event modules were overwriting the event modules.

💡 Motivation and Context

closes: #2718

💚 How did you test it?

unit tests and sentry-testkit

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• All tests passing
• No breaking changes

Ttechnically the event modules prioritization is breaking change but it never should be like that so I consider that a fix

🔮 Next steps

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- Modules loaders integration handles native error and event modules are prioritised over native ([#2730](https://github.com/getsentry/sentry-react-native/pull/2730))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

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