Reverts "Gradle Lockfile workaround and Android Embedder dependency change for ExifInterface (#177508)"

[auto-submit]

Reverts: #177508

Initiated by: jtmcdole

Reason for reverting: tree is no bueno

┌─ Flutter Fix ───────────────────────────────────────────────────────────────────┐ [2025-11-12 16:47:24.646119] [STDOUT] stdout: │ You need to update the lockfile, or disable Gradle dependency locking. │ [2025-11-12 16:47:24.646119] [STDOUT] stdout: │ To regenerate the lockfiles run: `.\gradlew.bat :generateLockfiles` in │ [2025-11-12 16:47:24.646119] [STDOUT] stdout: │ c:\
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: mboetger
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {reidbaker, gmackall}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
Create a workaround for generating gradle lock files.  When the ignore file exists, gradle locking will be disabled. This will allow deps for the embedder to be checked in, and then in a follow-up PR the lockfiles can correctly be updated and the ignore file can be deleted.

Fixes: #177066, #177071

## Pre-launch Checklist

- [X] I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
- [X] I read the [Tree Hygiene] wiki page, which explains my responsibilities.
- [X] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
- [X] I signed the [CLA].
- [X] I listed at least one issue that this PR fixes in the description above.
- [X] I updated/added relevant documentation (doc comments with `///`).
- [X] I added new tests to check the change I am making, or this PR is [test-exempt].
- [X] I followed the [breaking change policy] and added [Data Driven Fixes] where supported.
- [X] All existing and new tests are passing.


<!-- end_revert_body -->

[flutter-dashboard]

It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. If you believe this PR qualifies for a test exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!). The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.