Hoist the active policy subscription out of Search rows

[TMisiukiewicz]

Explanation of Change

usePolicyForMovingExpenses subscribed to the active policy itself, with activePolicySelector — a selector that returns the whole policy object. useOnyx deep-compares a selector's output to keep its reference stable, so each instance of the hook deep-compares an entire workspace (employeeList, customUnits, rules) on every Onyx merge touching its key.

On Search that is multiplied twice over: useOnyx re-points policy_* at the snapshot_<hash> key, so every snapshot merge notifies it, and each visible transaction row reaches the hook ~4× (TransactionListItemWide, TransactionListItemInner, TransactionItemRowWide, and usePolicyForTransaction ← useTransactionInlineEdit). Profiled in dev, each compare cost 3.2–6.6 ms and every one concluded "equal" — pure waste, on the JS thread inside keyChanged.

This PR moves that subscription into ActivePolicyProvider, mounted in OnyxListItemProvider (whose stated purpose is shared subscriptions for list items). usePolicyForMovingExpenses now reads useActivePolicy().

Performance improvement: On a large customer account with a policy containing 11k members, deepEqual checks on reports from that policy previously took 100–300ms. This has been reduced to ~30ms.

Fixed Issues

$ #98311
PROPOSAL:

Tests

1. Open Search → Expenses on a wide screen with a workspace and several expenses. Verify rows render as before, with the same category / tag / merchant data.
2. From Search, start a new expense. Verify it targets the active workspace and that workspace-selection / upgrade steps behave as before.
3. Switch your default workspace elsewhere, return to Search, and verify rows and the create flow pick up the new active workspace.

• Verify that no errors appear in the JS console

Offline tests

N/A

QA Steps

Same as tests.

• Verify that no errors appear in the JS console

PR Author Checklist

• I linked the correct issue in the ### Fixed Issues section above
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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

[github-actions]

⚠️ This PR is possibly changing native code and/or updating libraries, it may cause problems with HybridApp. Please check if any patch updates are required in the HybridApp repo and run an AdHoc build to verify that HybridApp will not break. Ask Contributor Plus for help if you are not sure how to handle this. ⚠️

[github-actions]

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[melvin-bot]

@cretadn22 Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

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[mountiny]

@cretadn22 can you review please

[cretadn22]

Reviewer Checklist

• I have verified the author checklist is complete (all boxes are checked off).
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  • I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
• I checked that screenshots or videos are included for tests on all platforms
• I included screenshots or videos for tests on all platforms
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  • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
  • I verified that comments were added to code that is not self explanatory
  • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
• If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
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Screenshots/Videos

Android: HybridApp

Screen.Recording.2026-08-12.at.18.47.11.mov

Android: mWeb Chrome

Screen.Recording.2026-08-12.at.18.43.43.mov

iOS: HybridApp

Screen.Recording.2026-08-12.at.18.46.33.mov

iOS: mWeb Safari

Screen.Recording.2026-08-12.at.18.44.38.mov

MacOS: Chrome / Safari

Screen.Recording.2026-08-12.at.18.37.51.mov

[cretadn22]

@TMisiukiewicz Could you please take a look at fixing the failing tests?

[TMisiukiewicz]

@cretadn22 updated!

[mountiny]

Thanks

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[MelvinBot]

🤖 I reviewed the changes in this PR against Expensify's help site content under App/docs/articles.

No help site changes are required.

This is a pure internal performance refactor with no user-facing behavior change:

• Adds a new ActivePolicyProvider React context and hoists the active-policy Onyx subscription out of Search rows into it (mounted in OnyxListItemProvider).
• Updates usePolicyForMovingExpenses to read the active policy from that context instead of subscribing directly.
• Removes the now-unused activePolicySelector.

The change is entirely about avoiding redundant deepEqual comparisons on the JS thread. The PR's own Tests/QA steps confirm the outcome is unchanged ("rows render as before," "behave as before"). There are no new features, settings, labels, buttons, tabs, or flows that the public help site documents, so no article under App/docs/articles needs updating.

Since no documentation changes are needed, no draft help site PR was created. @TMisiukiewicz, if you believe a user-facing behavior did change here that I missed, let me know and I'll draft the corresponding help site update.