Blur input path instead of requiring explicit enter in FormDirectory input

[dannon]

This should address users not knowing they need to explicitly hit enter to add the path; instead, we check when focus is lost and if it's valid we apply pending changes.

How to test the changes?

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• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[ahmedhamidawan]

I like this change, I think we can move it out of draft and merge?

[dannon]

Ahmed and I talked out band, but to update here -- I think I need to adjust handleblur but I want to add some extra tests that I haven't been able to get to yet. this will be a bugfix, and we can retarget 24.2 if we want, so I'll get to this during the freeze.

[ahmedhamidawan]

Thank you @dannon !