[0.85] feat(Pressable): add support for PlatformColor and alpha

[adrcotfas]

Target Branch

0.85

Link to commit or PR to be picked

facebook/react-native#56395

Description

android_ripple on Pressable (and TouchableNativeFeedback.Ripple()) only
accepted numeric (pre-processed ARGB int) colors. Passing a PlatformColor
would throw an invariant in JS, making theme-aware ripple colors impossible.

This is useful for providing more flexibility when customizing ripple color.

[github-actions]

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