fix: [M3-8126] - Fix Linode Create form events based on feedback

[mjac0bs]

Description 📝

Ignore me for now.

There are more changes to make in this PR. Opening it as a WIP because we will need its preview link to test with the backend.

TODO:

• [ ] Revert the v2 changes after testing handleFormFocus.

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How to test 🧪

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Reproduction steps

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Verification steps

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