Pressability test migrated to Jest moder timers

[chicio]

Summary:

This PR migrates the Pressability tests so that it uses Jest modern timers.
First, I centralized Fake timers setup in the beforeEach and restored in the afterEach (to run test in isolation with respect to timers).
I migrated all the calls previously used to fire all pending timers (jest.runOnlyPendingTimers) to jest.advanceTimersByTime, setting the correct timing need for the tests to verify the entire Pressability flows (including minimum press duration and long press delay configurations). This should improve the correctness of the tests (demonstrated also by the test plan below).
I also tried to increased the readability of the tests by extracting some constants (related to the inner configured delay/press duration of the Pressability class).

Changelog:

[GENERAL] [CHANGED] - Migrated Pressability tests to Jest modern timers

Test Plan:

• Ran Pressability-test and verify all tests cases passed
• Ran the full React Native test suite to ensure all tests pass.
• Verified test correctness by intentionally breaking production code:
  • Modified callback invocation logic (onPressIn, onPressOut, onLongPress) to verify that tests were failing
  • Changed timing constants (eg. DEFAULT_MIN_PRESS_DURATION, DEFAULT_LONG_PRESS_DELAY_MS`)to verify that tests correctly failed