[Diagnostics App] Fix partial checkpoints (bucket priorities)

[rkistner]

The diagnostics app overrides SqliteBucketStorage to track some metadata. This was not updated when we implemented bucket priorities, resulting in checksum failures in the diagnostics app when bucket priorities are used.

The symptoms would be repeated logs like below, and never completing the sync.

[PowerSyncStream] Partial checkpoint complete 1
[SqliteBucketStorage] validateChecksums priority, checkpoint, result item undefined, {...}
[SqliteBucketStorage] Checksums failed for ...
[SqliteBucketStorage] done deleting bucket

This issue was specific to the diagnostics app, and did not affect any other SDK clients.

The deployed diagnostics app version was a little outdated, and not affected by this issue.

[changeset-bot]

🦋 Changeset detected

Latest commit: 4720bf8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@powersync/diagnostics-app	Patch

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