Add exhaustive deps to social block edit effect

[draganescu]

What?

Closes #64896

Why?

Code quality.

How?

Adds missing deps. Removes ESLint exception.

Testing Instructions

N/A

Testing Instructions for Keyboard

N/A

Screenshots or screencast

N/A

[github-actions]

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Co-authored-by: draganescu <[email protected]>
Co-authored-by: getdave <[email protected]>

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[getdave]

This is on your fork of the Plugin?

[getdave]

This breaks the current functionality of reverting the icon background and text color. I believe it's because the else statement now runs as the deps change which causes the attributes to update to the "backup" which is empty.

We should probably populate the backgroundBackupRef each time the effect runs.

[draganescu]

I am not sure what happened here that resulted in this PR opened agains WP trunk ... weird.