feat(android): add dialog root fallback for React Native Modal support

[yuki2006]

Summary

Adds automatic inRoot(RootMatchers.isDialog()) fallback on Android to support interactions with elements rendered inside React Native <Modal>.

Fixes #4928

Problem

On Android, React Native's <Modal> component renders its content in a separate dialog window root. Espresso's default view matching only searches the main window root, causing NoMatchingViewException for any element inside a Modal — even though the element is visible on screen.

This makes it impossible to test flows involving Modal (e.g. pickers, confirmation dialogs, bottom sheets) without manual inRoot workarounds, which Detox does not currently expose.

Solution

When a view interaction fails with NoMatchingViewException, automatically retry with .inRoot(RootMatchers.isDialog()). This is applied to:

• Assertions (DetoxAssertion.java): assertMatcher and waitForAssertMatcher
• Actions (SingleViewActionPerformer.kt, MultipleViewsActionPerformer.kt): perform

The fallback only triggers on NoMatchingViewException, so there is no impact on views found in the default root.

Changes

File	Change
DetoxAssertion.java	Dialog root fallback in assertMatcher() and waitForAssertMatcher()
SingleViewActionPerformer.kt	Dialog root fallback in performOn()
MultipleViewsActionPerformer.kt	Dialog root fallback in performOn()

Test plan

• Verified with a React Native app using <Modal visible={true}> containing tappable elements and assertions
• Existing tests unaffected (fallback only activates on NoMatchingViewException)