[himanshuchawla0807-gif]

When a child folder is selected, clicking its parent collapses the branch and selects the parent, but selection auto-expansion immediately opens it again. Expand only ancestors of the selected node so the first click leaves the parent collapsed. This also covers collapsing a bundle and an empty folder query parameter.

closes: #75068

Validation:

• All three regression cases fail on unchanged upstream; folder-tree suites pass with the fix (29 tests).
• Actual component browser check confirms the first parent click stays collapsed; nested initial selections still expand their ancestors. This is component validation, not a deployed Airflow end-to-end test.
• Scoped ESLint, TypeScript, commit hooks and required manual checks pass, including both UI builds.
• Full UI suite: 1,963 tests pass across 239 files using pnpm test --maxWorkers=2 --testTimeout=30000; simple-auth UI test also passes. Earlier runs hit unrelated five-second timeouts on a heavily loaded Mac; no assertions or repository timeout settings were changed.

Before/after component screenshots (same single parent click):

Before	After

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Was generative AI tooling used to co-author this PR?

• Yes — OpenAI Codex

Generated-by: OpenAI Codex following the guidelines

[github-actions]

Backport successfully created: v3-4-test

Note: As of Merging PRs targeted for Airflow 3.X
the committer who merges the PR is responsible for backporting the PRs that are bug fixes (generally speaking) to the maintenance branches.

In matter of doubt please ask in #release-management Slack channel.

Status	Branch	Result
✅	v3-4-test