[0.78] Fix issue with zIndex child removal

[cipolleschi]

Target Branch(es)

0.78

Link to commit or PR to be picked

facebook/react-native@34ae9fa

Description

This appears to fix an issue where removing a sibling with zIndex breaks drawing of the next sibling. The theory is that eager return in onViewRemoved prevents the view from reverting into a state where it no longer uses custom draw order. However, tracing back history, this eager return was added to fix a bug in Reanimated. cc bartlomiejbloniarz to confirm if this Reanimated issue resurfaces from this change.
See also facebook/react-native#49838

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[cipolleschi]

@react-native-bot merge 34ae9facd52b5da28b5ced22110532bbcdad2cec 0.78-stable

[react-native-bot]

✅ Successfully picked up your commit facebook/react-native@34ae9fa on the branch https://github.com/facebook/react-native/commits/0.78-stable