implement the deep test name pattern lookup

[connectdotz]

Resolves #1209

When the test branch contains both resolved and unresolved test names in its parent chain, the current "shallow" test name validation might mistakenly consider it "resolved". This PR changes the validation to perform a deep lookup: only returning the node whose parent nodes are all resolved for a test run. If the root test block of the given test file is unresolved, the whole test file will be run instead.

[Copilot]

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

src/test-provider/test-item-data.ts:117

• Consider adding unit tests to cover the error handling branch when no process is available in scheduleTest.

throw new Error(`failed to schedule test for ${this.item.id}`);

[coveralls]

Pull Request Test Coverage Report for Build 14274644143

Details

• 24 of 24 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.005%) to 98.185%

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Totals
Change from base Build 14252604180:	0.005%
Covered Lines:	4113
Relevant Lines:	4119

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💛 - Coveralls