Fix: Button Replace remaining 40px default size violations [Block Editor 2]

[dhruvang21]

Part of - #65018

What?

Issue - #65018, To use default to 40px for the button.

Why?

To make the consistent button across Gutenberg, and we would have a lint rule added once fixed, all the button usage.

How?

Change from __next40pxDefaultSize={ false } to __next40pxDefaultSize on component.

Testing Instructions

Screenshot is added for individual changed files.

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[github-actions]

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[hbhalodia]

Hi @dhruvang21, Can you please add before/after screenshots for the changes?

This would help us to check the change visually.

Thank You,

[dhruvang21]

Before
After