Disable discard confirmation for all odometer submission paths

[MelvinBot]

Explanation of Change

PR #78291 migrated DiscardChangesConfirmation from useBeforeRemove to usePreventRemove and changed the prop from a getHasUnsavedChanges callback to a reactive hasUnsavedChanges boolean. In IOURequestStepDistanceOdometer, the hasUnsavedChanges value is computed via useMemo by comparing current readings against initial readings.

The bug: when the user creates an odometer expense via the normal flow (navigating to the confirmation page), setShouldEnableDiscardConfirmation(false) was only called inside the shouldSkipConfirmation branch. For the normal flow, hasUnsavedChanges remained true because the readings still differed from initialReadings, causing the DiscardChangesConfirmation component to incorrectly show the discard modal on forward navigation.

This PR makes setShouldEnableDiscardConfirmation(false) unconditional so it runs for all submission paths, matching the pattern used by IOURequestStepDescription and IOURequestStepMerchant which reset their unsaved changes state at the start of their submit handlers.

Fixed Issues

$ #84218

Tests

1. Log in with an Expensifail account.
2. Go to a workspace chat.
3. Click + > Track distance > Odometer.
4. Enter Start and End reading > Next.
5. Click Create expense.
6. Verify that the Discard changes modal does NOT appear.
7. Verify the expense is created successfully.

Regression test (discard modal still works):

1. Go to a workspace chat.
2. Click + > Track distance > Odometer.
3. Enter Start and End readings.
4. Press back (or swipe back on iOS) WITHOUT submitting.
5. Verify the Discard changes modal appears correctly.

• Verify that no errors appear in the JS console

Offline tests

N/A — This change only affects navigation prevention logic which is client-side only.

QA Steps

Same as tests above.

• 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
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  • 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
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  • 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)
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Screenshots/Videos

Android: Native

N/A — Logic-only change (no UI changes)

Android: mWeb Chrome

N/A — Logic-only change (no UI changes)

iOS: Native

N/A — Logic-only change (no UI changes)

iOS: mWeb Safari

N/A — Logic-only change (no UI changes)

MacOS: Chrome / Safari

N/A — Logic-only change (no UI changes)

[codecov]

Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines	Coverage Δ
...ou/request/step/IOURequestStepDistanceOdometer.tsx	0.00% <ø> (ø)
... and 18 files with indirect coverage changes

[DylanDylann]

@MelvinBot Close this PR

[MelvinBot]

Closed this PR as requested by DylanDylann.