Fix more flakiness in Cosmos tests#38211

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andriysvyryd/cosmos-concurrency-test-fix

Commits on May 1, 2026

Fix flaky CosmosBulkConcurrencyTest by using unique database name

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Update test/EFCore.Cosmos.FunctionalTests/Update/CosmosBulkConcurrencyTest.cs

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Commits on May 2, 2026

Clear change tracker before CleanAsyncImpl to fix retry identity conflicts

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Move ChangeTracker.Clear to CosmosDatabaseCreator.EnsureCreatedAsync

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Defer shared Cosmos database deletion to process exit

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Commits on May 4, 2026

Commits on May 5, 2026

Fix ordering in flaky tests, use non-shared fixture for warning test

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