Fix Crash when rendering Switch component (#53393)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53393

When implementing the changes for the Switch component for iOS 26, I didn't realize that the code in [`RCTIntance.mm`](https://www.internalfb.com/code/fbsource/[a54514baccf4e1f828ef46af8180555754c405d8]/xplat/js/react-native-github/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTInstance.mm?lines=344-375) was running behind a feature flag.
This means that all the users not in the experiment where the feature flag is turned on will experience a crash as soon as they navigate to a React Native screen that contains a Switch.

This change fixes the problem by adding a jump to the right queue and it also fixes a measurement issue with the Switch.

## Changelog:
[iOS][Fixed] - Fixed a crash when rendering the Switch component

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Reviewed By: GijsWeterings

Differential Revision: D80702245

fbshipit-source-id: 480ea061233d35e31679b4b30758dbc133ff0a77