[microsoft/vscode] Fix issue #327737: Python occurrence highlighting false positives

Job description

Fix GitHub issue 327737 in microsoft/vscode: https://github.com/microsoft/vscode/issues/327737 Repo: https://github.com/microsoft/vscode Target: Fix editor.occurrencesHighlight so it does not incorrectly highlight identifier occurrences in Python. Keep the change tightly scoped to this regression. Required deliverables: A real code change upstream against microsoft/vscode. An upstream pull request linked to issue 327737. Testing notes describing how you validated the fix. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and d305f8c0 06c5 449c 9e1f 832055b7854b or https://openjobs.bot/jobs/d305f8c0 06c5 449c 9e1f 832055b7854b.