Fix: sort document reference by long type id

[milaGGL]

Document ID supports strings and well as long integers in the format of "id" . When sorting documents by document ID, it should be sorted in the following order:

1. Long (numeric order)
2. String (lexicographic order)

[github-actions]

Release note changes

No release note changes were detected. If you made changes that should be
present in the next release, ensure you've added an entry in the appropriate
CHANGELOG.md file(s).

[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_responses.sh should be updated to clone the latest version of the responses: v5.2

[google-oss-bot]

Coverage Report ¹

Affected Products

• firebase-firestore

  Overall coverage changed from 45.73% (50eacb7) to 45.72% (dd0d1a1) by -0.00%.

  Filename	Base (50eacb7)	Merge (dd0d1a1)	Diff
  BasePath.java	86.54%	82.54%	-4.00%
  LruGarbageCollector.java	97.27%	93.64%	-3.64%
  SetMutation.java	94.44%	97.22%	+2.78%

Test Logs

• Base (50eacb7): https://github.com/firebase/firebase-android-sdk/actions/runs/12300708521
• Merge (dd0d1a1): https://github.com/firebase/firebase-android-sdk/actions/runs/12360791490

1. https://storage.googleapis.com/firebase-sdk-metric-reports/Iv2RPwqjpV.html

[github-actions]

Test Results

  186 files   -   825    186 suites   - 825   4m 26s ⏱️ - 29m 52s
1 234 tests  - 4 640  1 218 ✅  - 4 633  16 💤  -  6  0 ❌  - 1 
2 492 runs   - 8 883  2 460 ✅  - 8 871  32 💤  - 11  0 ❌  - 1 

Results for commit fc2b0b5. ± Comparison against base commit 50eacb7.

This pull request removes 4640 tests.

com.google.android.datatransport.cct.CctBackendFactoryTest ‑ create_returnCCTBackend_WhenBackendNameIsCCT
com.google.android.datatransport.cct.CctDestinationTest ‑ cctDestination_shouldOnlySupportProtoAndJson
com.google.android.datatransport.cct.CctDestinationTest ‑ cctDestination_shouldSupportProtoAndJson
com.google.android.datatransport.cct.CctTransportBackendTest ‑ decorate_whenOffline_shouldProperlyPopulateNetworkInfo
com.google.android.datatransport.cct.CctTransportBackendTest ‑ decorate_whenOnline_shouldProperlyPopulateNetworkInfo
com.google.android.datatransport.cct.CctTransportBackendTest ‑ schedule_shouldAddCookieOnPseudonymousIds
com.google.android.datatransport.cct.CctTransportBackendTest ‑ schedule_shouldDropCookieOnMixedPseudonymousIds
com.google.android.datatransport.cct.CctTransportBackendTest ‑ send_CompressedResponseIsUncompressed
com.google.android.datatransport.cct.CctTransportBackendTest ‑ send_whenBackendRedirectsMoreThan5Times_shouldOnlyRedirect4Times
com.google.android.datatransport.cct.CctTransportBackendTest ‑ send_whenBackendRedirects_shouldCorrectlyFollowTheRedirectViaPost
…

♻️ This comment has been updated with latest results.

[google-oss-bot]

Size Report ¹

Affected Products

• firebase-firestore

  Type	Base (50eacb7)	Merge (dd0d1a1)	Diff
  aar	1.45 MB	1.45 MB	+338 B (+0.0%)
  apk (release)	11.4 MB	11.4 MB	+328 B (+0.0%)

Test Logs

• Base (50eacb7): https://github.com/firebase/firebase-android-sdk/actions/runs/12300708521
• Merge (dd0d1a1): https://github.com/firebase/firebase-android-sdk/actions/runs/12360791490

1. https://storage.googleapis.com/firebase-sdk-metric-reports/IeSPHCCmjs.html

[ehsannas]

Could you make the following improvement to the test utils? (this was not added or modified by this PR, but it'd make sense to improve it here).