Delete TextAncestor compatibility shim

[yaminyassin]

Summary:

Deletes packages/react-native/Libraries/Text/TextAncestor.js, which exists solely as a backwards-compatibility shim for react-strict-dom. The shim's own comment carries a TODO from @huntie to delete it once the cross-repo reference is fixed:

// Compatibility module for ReactStrictDOMTextAncestorContext.native.js.flow (react-strict-dom)
// TODO(huntie): Delete after we've fixed this cross-repo reference

import TextAncestorContext from './TextAncestorContext';

export default TextAncestorContext;

RSD has now switched to the public unstable_TextAncestorContext API in facebook/react-strict-dom#477. Once that PR merges and a new react-strict-dom version is published, this shim is no longer needed.

Verified clean

No internal React Native consumers reference the shim, every internal user imports the canonical TextAncestorContext directly:

• packages/react-native/index.js:124-125 — require('./Libraries/Text/TextAncestorContext').default
• packages/react-native/index.js.flow:132 — export {default as unstable_TextAncestorContext} from './Libraries/Text/TextAncestorContext'
• packages/react-native/Libraries/Components/TextInput/TextInput.js:58 — import TextAncestorContext from '../../Text/TextAncestorContext'
• packages/react-native/Libraries/Components/View/View.js:13 — same
• packages/react-native/Libraries/Text/Text.js:24 — import TextAncestorContext from './TextAncestorContext'
• packages/react-native/Libraries/Text/Text.d.ts:230 — export const unstable_TextAncestorContext: React.Context<boolean> (TS public API export, unaffected)

No __snapshots__, BUCK/BUILD files, .flowconfig, or tsconfig.json references the shim path.

Changelog:

[Internal] [Removed] - Delete Libraries/Text/TextAncestor compatibility shim

Test Plan:

Followed the steps in How to Run and Write Tests and How to Contribute Code on macOS with Node v24.11.0 / Yarn 1.22.22.

$ yarn install --ignore-scripts
Done in 112.26s.

$ yarn lint
Done in 27.00s.

$ yarn flow
No errors!
Done in 29.05s.

$ yarn test-typescript
Done in 1.46s.

$ yarn test
Test Suites: 275 passed, 275 total
Tests:       1 skipped, 5635 passed, 5636 total
Snapshots:   1798 passed, 1798 total
Time:        51.557 s

$ yarn build-types --validate
PASS  API snapshot is up to date.
Done in 16.56s.

All five JS-level checks pass. The public TypeScript API surface (ReactNativeApi.d.ts) is unchanged — the shim was a .js-only re-export and never part of the typed public API.

Dependencies / merge order

Marked as draft. Do not merge until react-strict-dom has shipped a release containing facebook/react-strict-dom#477, otherwise published versions of react-strict-dom that still use react-native/Libraries/Text/TextAncestor will fail at runtime when consumers upgrade React Native.

I'll un-draft this PR once the strict-dom side ships.

[huntie]

Let's see if this passes CI once imported 😄

[yaminyassin]

@huntie finally getting patched 😂

The strict-dom side is in facebook/react-strict-dom#477. It might take a while on their side but i'll let you know when its merged!

These is my first contribution to the project so let me know what i can change/improve 😄