Fix expense rule selection being cancelled when opened via the Concierge link

[mukhrr]

Explanation of Change

Mobile selection mode is a single global Onyx flag. The Concierge rules link pushes a fullscreen tab entry rather than an RHP, so the report you came from stays mounted underneath, and two of its subscribers clear the flag as soon as the Rules page sets it:

• MoneyReportHeader clears it in its render body when the report has one visible transaction
• useMobileSelectionMode clears it on mount, and SelectionToolbarGate mounts SelectionToolbar exactly when the flag flips

Focus-gating both clears fixes it, verified red/green on iOS. The hook cleanup is deferred rather than skipped, so the existing stale-selection cleanup still runs once the screen is focused.

Known follow-up, not fixed here: iOS swipe-back out of selection mode leaves a stale Select multiple header on the report for about half a second.

Fixed Issues

$ #95132
PROPOSAL: #95132 (comment)

Tests

Precondition: two or more personal expense rules, and an expense created through a rule so the Concierge message with the personal expense rules link exists.

1. On iOS or Android, open the report containing that expense, open the expense, and tap the personal expense rules link in the Concierge message
2. Long-press any rule and tap Select
3. Verify selection mode stays on: Select multiple header, 1 selected, and checkboxes visible
4. Repeat on a report with two or more expenses and verify selection is kept there too
5. Open Settings > Expense rules directly and verify long-press to select still works
6. Enter selection mode on any list, navigate away, come back, and verify the selection is cleared

• Verify that no errors appear in the JS console

Offline tests

Selection mode is a RAM-only Onyx value and the flows above make no API calls, so behaviour is identical offline.

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
• I wrote clear testing steps that cover the changes made in this PR
  • I added steps for local testing in the Tests section
  • I added steps for the expected offline behavior in the Offline steps section
  • I added steps for Staging and/or Production testing in the QA steps section
  • I added steps to cover 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 tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
• I included screenshots or videos for tests on all platforms
• I ran the tests on all platforms & verified they passed on:
  • Android: Native
  • Android: mWeb Chrome
  • iOS: Native
  • iOS: mWeb Safari
  • MacOS: Chrome / Safari
• I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
• I verified there are no new alerts related to the canBeMissing param for useOnyx
• I followed proper code patterns (see Reviewing the code)
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    • If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
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• I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
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• If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
• If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
  • I verified that all the inputs inside a form are aligned with each other.
  • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
• If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
• I added unit tests for any new feature or bug fix in this PR to help automatically prevent regressions in this user flow.
• If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native

Android: mWeb Chrome

android_web.mp4

iOS: Native

IOS_app.mp4

iOS: mWeb Safari

ios_web.mp4

MacOS: Chrome / Safari

web.mp4

[melvin-bot]

@ChavdaSachin 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]