Improve Tests

[stevensJourney]

Overview

The JS Web unit tests are still failing quite often.

This PR makes some improvements which cause the tests to pass in CI more often.

• Updated Vitest and Playwright to the latest versions
• Improved the structure for shared tests. Shared tests for with/without webworkers and OPFS are now performed using shared test describing methods. The test suites are now separated for different DB configurations. Previously the tests would diverge on the individual test level.
• A subtle race condition in the closing of async DBAdapters has been fixed. This ensures a DBAdapter should be completely closed when powersync.close has been called.
• Vitest still tries to run unit tests concurrently, even if sequential is specified, this can cause locking timeouts. Testing DB generator methods have been updated to use random dbFileNames to isolate tests better.
• Tests have been updated to use onTestFinished for closing/disposing PowerSync clients when the test completed.

[changeset-bot]

🦋 Changeset detected

Latest commit: 21c104b

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

This PR includes changesets to release 6 packages

Name	Type
@powersync/common	Patch
@powersync/web	Patch
@powersync/op-sqlite	Patch
@powersync/react-native	Patch
@powersync/tanstack-react-query	Patch
@powersync/diagnostics-app	Patch

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