[No QA] perf: avoid mapping all personal details in ReportWelcomeText

[TMisiukiewicz]

Explanation of Change

ReportWelcomeText previously called useMappedPersonalDetails(personalDetailMapper), which walks the entire PERSONAL_DETAILS_LIST and produces a projected copy of every personal detail on every render.

The component only consumes personal details for a handful of participants (via getPersonalDetailsForAccountIDs(participantAccountIDsExcludeCurrentUser, personalDetails)), which indexes by account ID — so the full mapping was wasted work.

The fix swaps the mapped hook for raw useOnyx(ONYXKEYS.PERSONAL_DETAILS_LIST). Re-render surface is unchanged (Onyx still uses shallowEqual on the raw collection), but per-render cost drops from ~270ms to a few key lookups.

Before, on account with ~11k personal details and iOS, render time of ReportWelcomeText varied from 50 to 500ms (depending on a report). Now it's stable ~2ms every time.

Fixed Issues

$ #88516
PROPOSAL:

Tests

• 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
• I wrote clear testing steps that cover the changes made in this PR
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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

[melvin-bot]

@abzokhattab 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]

[abzokhattab]

the changes looks good to me

NAB: Minor issues i found that worth handling for consistency:

1. the following test case name is now not correct ... lets remove the via useMappedPersonalDetails
2. Same anti‑pattern still lives in DebugReportActions we can also handle it

[abzokhattab]

Reviewer Checklist

• I have verified the author checklist is complete (all boxes are checked off).
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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 shown in the product is localized by adding it to src/languages/* files and using the translation method
  • I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
  • 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)
  • I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • I verified the JSDocs style guidelines (in STYLE.md) were followed
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• If any new file was added I verified that:
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  • A similar style doesn't already exist
  • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG)
• If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
• If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
• If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
• 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.
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Screenshots/Videos

Android: HybridApp

Android: mWeb Chrome

iOS: HybridApp

iOS: mWeb Safari

MacOS: Chrome / Safari

[TMisiukiewicz]

@abzokhattab thanks, done 👍

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[github-actions]

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