Site Editor: modal incorrect size for edit template modal

[annezazu]

Using beta 2 for 6.6 without GB installed. When clicking around the broader template area while editing a page in the Site Editor, I noticed that the modal that pops up doesn't match the usual modal size. Below is what it currently looks like:

Below is what it should look like:

While not a "bug" per say, I think this is worth rectifying as a low code change but an important detail to get right for a smooth site editing experience.

[talldan]

The "Be careful" one is the odd one out. Most dialogs don't have a consistent size. They take up the size of the text content. That's why this one is massive.

It might be worth doing an audit across the dialogs (especially ConfirmDialog) and considering using size="medium" on them where appropriate.

[talldan]

I pushed a PR, #62532, that addresses some of the sizes.