feature: cmd+return to submit form

[adrianthedev]

Description

Fixes #3531

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Screenshots & recording

Manual review steps

1. Go to an edit page
2. Make some changes
3. when you are focused on an input field run cmd+return
4. observe how the form is submitted

Manual reviewer: please leave a comment with output from the test if that's the case.

[codeclimate]

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[github-actions]

This PR has been merged into main. The functionality will be available in the next release.

Please check the release guide for more information.

[xeron]

Not sure if related but this might have broken Chrome autofill: #3553