Refine edit icon state for edit query and policy

[lukeheath]

This task was pulled from #2595 into its own issue.

Figma

Add the ability to create and edit detailed policies and associated proprietary queries: https://www.figma.com/file/hdALBDsrti77QuDNSzLdkx/?node-id=2897%3A73534

1

• Refine edit icon state on edit query / policy pages.
• We want to ensure the same edit functionality is in place for both queries and policies.
• On focus of the "Title" or "Description' fields, the respective edit icon should disappear.
• On unfocus, the edit icon should reappear.
• The edit icon will need to move based on how long the title or description are.
• There should be no shifting of text when switching between edit/no edit states.

[noahtalerman]

@lukeheath I filed an issue with additional fixes on the Edit query and Edit policy pages here: #3195

Happy to hop on a call to discuss the expected behavior in the above linked issue.