test(core): add subfolder ignore test for getFolderStructure

[fallofpheonix]

This PR adds a test case to verify that getFolderStructure correctly respects .gitignore rules for files in subdirectories when specified in the root .gitignore. This relates to issue #27787.

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[gemini-code-assist]

Summary of Changes

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This pull request improves the test suite for the folder structure discovery utility by ensuring that ignore patterns defined in a root .gitignore file are properly applied to nested files. This change helps validate the expected behavior for file filtering and addresses concerns related to issue #27787.

Highlights

• Test Coverage Expansion: Added a new test case to verify that the getFolderStructure utility correctly respects .gitignore rules for files located within subdirectories.

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[github-actions]

📊 PR Size: size/S

• Lines changed: 17
• Additions: +17
• Deletions: -0
• Files changed: 1

[gemini-code-assist]

Code Review

This pull request adds a unit test to getFolderStructure.test.ts to verify that files in subdirectories specified in the root .gitignore are correctly ignored. I have no feedback to provide as there are no review comments.