[Bron Davies (brondavies)]

Summary:

On macOS, a Pressable drawn over a TextInput never fires onPress. The surface's touch handler gets the press, but RCTViewComponentView doesn't implement mouseDown:, so NSView's default passes it on (through -_nextResponderForEvent:) to the overlapping text field beneath the point. The field's tracking loop then consumes the mouseUp, and the press never ends.

This accepts mouseDown: in RCTViewComponentView, as rightMouseDown: already does for the same reason.

Test Plan:

RNTester-macOS (Debug, arm64, Xcode 27.1, macOS 26.6.2), Playground with a Pressable absolutely positioned over a TextInput:

• On main, sending the button's view mouseDown: (lldb) reaches -[NSTextField mouseDown:] of the field beneath.
• With this change, it stops at the button.
• In an app on 0.83.0 with the same change, real clicks on such a button fire onPress; before it, they didn't.

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