fix: inconsistent copy re: groups vs conversation - WPB-24863 🍒 🍒

[github-actions]

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

• fix: inconsistent copy re: groups vs conversation - WPB-24863 🍒 #4717

Original PR description:

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WPB-24863 [iOS] [Groups] Naming is inconsistent when deleting or leaving a group by user

Issue

Cherry pick of #4603

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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.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[johnxnguyen]

closing as 4.18 has been released