fix(KeyValue Editor): fix key value focus issue and handle updating params from url

[gatzjames]

Highlights:

• Fixes an issue where typing on the first empty item would lose focus
• Fixes an issue where importing params from the url would not work
• Fixes an issue where having a disabled item and then enabling it wouldn't allow for it to be editable

[sentry]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ Error: Expected fetch controller: :r55: app:///index.html View Issue
• ‼️ Error: Expected fetch controller: :r2s: app:///index.html View Issue
• ‼️ Error: Expected fetch controller: :r5v: app:///index.html View Issue
• ‼️ Error: Expected fetch controller: :r7c: app:///index.html View Issue
• ‼️ Error: Expected fetch controller: :r4d: app:///index.html View Issue

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