[Feature] Allow customization of minOriginY in the initializer of ReactionsOverlayView

[sheep-q]

🔗 Issue Links

N/A

🎯 Goal

Be able to update min origin Y position of ReactionsOverlayView content for better UI flexibility instead of using a fixed default value.

📝 Summary

Allow minOriginY to be set through the initializer for better UI customization.

🛠 Implementation

Add minOriginY to the initializer of ReactionsOverlayView.

🎨 Showcase

Add relevant screenshots and/or videos/gifs to easily see what this PR changes, if applicable.

Before	After
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🧪 Manual Testing Notes

Explain how this change can be tested manually, if applicable.

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• Changelog is updated with new localization keys
• New code is covered by unit tests
• Documentation has been updated in the docs-content repo

[laevandus]

Thank you. Looks good, we'll take this change in.