chore: upgrade ESLint to v9 and separate formatting checks

[krozniata]

Summary

Test Plan

What's required for testing (prerequisites)?

What are the steps to reproduce (after prerequisites)?

Compatibility

OS	Implemented
iOS	✅❌
Android	✅❌

Checklist

• I have tested this on a device and a simulator
• I added the documentation in README.md
• I updated the typed files (TS and Flow)

[github-actions]

🟢 e2e: 11 passed

All 11 tests in 9 files

	Test	Time
🟢	tests/basic-pager.e2e.ts · 3 passed	1m 51s
🟢	basic pager › in LTR › pages horizontally	37.0s
🟢	basic pager › in LTR › pages vertically	32.5s
🟢	basic pager › in RTL › pages horizontally with the reversed gesture	41.5s
🟢	tests/issues/issue-1083-modal-set-page.e2e.ts · 1 passed	13.2s
🟢	setPage called behind a native-stack modal lands on the requested page	13.2s
🟢	tests/issues/issue-1098-nested-pager.e2e.ts · 1 passed	13.9s
🟢	outer pager stays responsive after its page count changes around a nested pager	13.9s
🟢	tests/material-top-bar.e2e.ts · 1 passed	11.0s
🟢	material top tabs survive a native-stack push and pop	11.0s
🟢	tests/nested-pager-view.e2e.ts · 1 passed	10.9s
🟢	nested horizontal and vertical pagers scroll independently	10.9s
🟢	tests/on-page-selected.e2e.ts · 1 passed	12.1s
🟢	onPageSelected fires an alert for every page change	12.1s
🟢	tests/scrollable-pager-view.e2e.ts · 1 passed	16.6s
🟢	pager inside a ScrollView keeps its page across vertical scrolls	16.6s
🟢	tests/smoke.e2e.ts · 1 passed	8.9s
🟢	horizontal pager pages with the panel buttons	8.9s
🟢	tests/tab-view-inside-scroll-view.e2e.ts · 1 passed	12.9s
🟢	TabView inside a ScrollView swipes tabs and scrolls the page	12.9s

_{e2e 0.18.0 · 3m 32s · android · run artifacts}

[github-actions]

🔴 e2e: 1 failed, 12 passed

🔴 basic pager › in LTR › pages horizontally
tests/support/basic-pager.ts:34

ENGINE_FAILURE at step 10 of 10: expect.toBeVisible getByTestId("pageNumber0"), after 1m 30s

snapshot failed: Daemon request timed out Hint: Retry with --debug and check daemon diagnostics logs. The timed-out snapshot request was canceled; the daemon was kept alive so the session can still be closed or inspected.

• Screen: com.pagerviewexample / Basic Example

Evidence: log

All 13 tests in 11 files

	Test	Time
🔴	tests/basic-pager.e2e.ts · 1 failed, 2 passed	4m 11s
🔴	basic pager › in LTR › pages horizontally	1m 54s
🟢	basic pager › in LTR › pages vertically	1m 25s
🟢	basic pager › in RTL › pages horizontally with the reversed gesture	52.7s
🟢	tests/issues/issue-1083-modal-set-page.e2e.ts · 1 passed	17.6s
🟢	setPage called behind a native-stack modal lands on the requested page	17.6s
🟢	tests/issues/issue-1096-keyboard-shrink.e2e.ts · 1 passed	25.6s
🟢	keyboard avoidance does not shrink the page under the keyboard	25.6s
🟢	tests/issues/issue-1098-nested-pager.e2e.ts · 1 passed	18.5s
🟢	outer pager stays responsive after its page count changes around a nested pager	18.5s
🟢	tests/issues/issue-1142-search-bar-inset.e2e.ts · 1 passed	22.6s
🟢	FlatList inside the pager gets the search bar safe-area insets	22.6s
🟢	tests/material-top-bar.e2e.ts · 1 passed	25.4s
🟢	material top tabs survive a native-stack push and pop	25.4s
🟢	tests/nested-pager-view.e2e.ts · 1 passed	26.0s
🟢	nested horizontal and vertical pagers scroll independently	26.0s
🟢	tests/on-page-selected.e2e.ts · 1 passed	22.8s
🟢	onPageSelected fires an alert for every page change	22.8s
🟢	tests/scrollable-pager-view.e2e.ts · 1 passed	32.6s
🟢	pager inside a ScrollView keeps its page across vertical scrolls	32.6s
🟢	tests/smoke.e2e.ts · 1 passed	13.1s
🟢	horizontal pager pages with the panel buttons	13.1s
🟢	tests/tab-view-inside-scroll-view.e2e.ts · 1 passed	20.6s
🟢	TabView inside a ScrollView swipes tabs and scrolls the page	20.6s

_{e2e 0.18.0 · 8m 0s · ios · run artifacts}

[troZee]

Should we consider using oxc? Or is this fine?

[krozniata]

Very little gain from oxc so I kept prettier