fix: add vertical spacing when hovered

[KartikLabhshetwar]

What does this PR do?

• Fixes Add hover spacing between options in LocationSelect dropdown #26418
• Fixes CAL-7015

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Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

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Summary by cubic

Adds vertical spacing between options in the LocationSelect dropdown to clearly separate items on hover and improve readability. Addresses CAL-7015 and #26418.

• Bug Fixes
  • Adds option class "mb-1 last:mb-0" via innerClassNames for consistent spacing.
  • Extracts innerClassNames from props and merges safely; passes the rest to Select to avoid conflicts.

^{Written for commit 0dba88d. Summary will update on new commits.}

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[cubic-dev-ai]

No issues found across 1 file

[dhairyashiil]

LGTM