Fix android_ripple not working with foreground: false in RN 0.82.1

[ish1416]

Summary:

Fixes #54372 #54298

The android_ripple prop on Pressable components stopped working in React Native 0.82.1 when foreground: false (the default value). This regression was introduced by the new background drawable system.

Root Cause: The setFeedbackUnderlay method in BackgroundStyleApplicator.kt was creating a new CompositeBackgroundDrawable with the ripple effect but not assigning it back to the view's background, causing the ripple to be invisible.

Solution: Modified the method to properly assign the new composite drawable containing the ripple effect to view.background.

Changelog:

[ANDROID] [FIXED] - Fix android_ripple not working with foreground: false in Pressable components

Test Plan:

Before the fix: Create a Pressable with android_ripple and foreground: false (default) - no ripple effect appears when pressed.

After the fix: The ripple effect works correctly.

Test case:

<Pressable
  android_ripple={{ color: 'red', borderless: false }}
  onPress={() => console.log('Pressed!')}
>
  <Text>Press Me</Text>
</Pressable>

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[freeboub]

For information, I confirm this is fixing the issue. I checked the backgroundColor is still well displayed, but I am not sure what else should be checked (maybe CSS shadows ?!)

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[ish1416]

@mdvacca @shergin
Can you please review this PR and merge if its possible?