fix: Disable is_admin switcher in Organization API Keys

[dougfabris]

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• [ ] I have added information to docs/ if required so people know about the feature!
• [x] I have filled in the "Changes" section below?
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Changes

It proposes to disabled the "is admin" switcher in order to not display roles toggle for free plans

Closes #3644

How did you test this code?

• Go to organization API Keys
• Create or edit an api key
• Is admin should be disabled for free plans