chore: Do not use feature flag when handling reset MLS event - WPB-18664

[github-actions]

This PR was automatically cherry-picked based on the following PR:

• chore: Do not use feature flag when handling reset MLS event - WPB-18664 #3432

Original PR description:

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WPB-18664 [iOS] Process conversation.mls-reset event

Issue

For rest broken MLS, when device receives event to fix broken conversation we don't need to guard it by FF, only triggering should be under FF

Checklist

• Title contains a reference JIRA issue number like [WPB-XXX].
• Description is filled and free of optional paragraphs.
• Adds/updates automated tests.

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UI accessibility checklist

If your PR includes UI changes, please utilize this checklist:

• Make sure you use the API for UI elements that support large fonts.
• All colors are taken from WireDesign.ColorTheme or constructed using WireDesign.BaseColorPalette.
• New UI elements have Accessibility strings for VoiceOver.