[0.81] Make accessors inside HeadlessJsTaskService open again #1061

[cortinico]

Target Branch

0.81

Link to commit or PR to be picked

react/react-native#52660

Description

This reverts a breaking change we accidentally shipped in HeadlessJsTaskService

The documentation in HeadlessJsTaskService for getReactHost and getReactNativeHost methods mention that users should override them to provide their own implementation.
However those vals are not open so users cannot really override them.

[react-native-bot]

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[motiz88]

@react-native-bot merge 7ef57163cb016317e43e563da7ea181989f6abca 0.81-stable

[react-native-bot]

✅ Successfully picked up your commit react/react-native@7ef5716 on the branch https://github.com/facebook/react-native/commits/0.81-stable