feat: improve literal search for member expressions

[nwidynski]

Closes

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

🧢 Your Project:

[nwidynski]

We adapted this recently and wanted to give back this small improvement 👍
Very unfortunate this hasn't made its way to the official repo, it's a great rule.

PS: I was also wondering whether parentFunction() may be replaced by getScope().block of the definition node. Is there any scenario where the definition would be inside a "non-function" scope while still accessible by the member?