[25Q3] Metrics Bugfix Flag

While the feature cutoff is coming up, according to the timeline, we
should be okay to check in flags until mid to late May (May 23rd)
specifically for bug fixes.

Bug: 412735345
Test: Flag Test
Flag: android.credentials.flags.metric_bugfixes_continued
Change-Id: I40e98c19f37d73af05514832771d45e24173e630