[mozzius]

Backports react/react-native#59748 (react/react-native#59748), which fixes the UI-thread stalls described in react/react-native#59743 (react/react-native#59743).

What happens. On Pixels running Android 16 and 17, Content Capture builds an AccessibilityNodeInfo on the UI thread for every view that appears. This happens even with no accessibility service on; every app gets a session through Android's scam detection.

Why RN makes it expensive. For RN views, each of those calls lands in ReactAccessibilityDelegate.getTalkbackDescription. That function initializes each child's node, then calls itself with null, which builds and initializes the same node again, all the way down. The cost grows exponentially with nesting depth.

Measured cost.

• The issue measured 100–280 ms freezes when a screen re-appears.
• While profiling the Home feed's list on a Pixel 7a (APP-3833), Content Capture was 20–25% of the main thread while scrolling, and RN's text accessibility delegate alone was about 14%.

The fix is one line: pass the node the loop already initialized.

• In 0.88.1, createNodeInfoFromView is exactly obtain() plus onInitializeAccessibilityNodeInfo, the same thing the loop just did. getTalkbackDescription copies the node it's given and never recycles it, so the descriptions don't change.
• The PR's 8-level test fixture goes from 511 node initializations to 9.

Notes:

• The upstream PR is still open; patches/react-native/pr-59748-1e10181fc9.patch.md has the removal TODO.
• The lockfile change is only the react-native patch_hash and the peer-suffix hashes derived from it. No versions changed.

Test plan

• Android build on a Pixel (Android 17): profile a screen pop and Home feed scrolling with simpleperf. getTalkbackDescription recursion should be gone from the Content Capture path.
• TalkBack on: spot-check that pressables and post rows announce the same text as before.

🤖 Generated with Claude Code

[linear-code]

APP-3834

[github-actions]

Size	Old size	New size	Diff
Uncompressed	9.76 MB	9.76 MB	0 B (0.00%)
Gzip	2.86 MB	2.86 MB	0 B (0.00%)

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[github-actions]

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