Query Title: Add padding support

[ndiego]

Related:

• Tracking: Addressing Design Tooling Consistency #43241
• Tracking: Dimensions Design Tools Consistency #43243

What?

Add padding support to the Query Title block.

Why?

To create consistency across blocks. This also allows users to override padding applied to Query Title blocks when there is a background color.

How?

Added the relevant block support in block.json

Testing Instructions

1. Insert a new Query Title block.
2. Confirm the Dimension control panel allows you to add padding.
3. Adding padding and configure.

Screenshots or screencast

(Note the padding visualizers are a bit wonky still in the Site Editor, but I don't think that should hold up this PR)

[andrewserong]

Thanks for updating this one @ndiego! I ran into the same issue as in the Post Title PR (#43457) where I think we might need to add in box-sizing: border-box in order for the padding to be consistent with adjacent blocks that have padding, like the Group block:

There's an example in the Post Date block PR (#43406), but it looks like for Query Title, that there isn't yet a styles.scss file. The block does output a wp-block-query-title classname in the editor and when rendered on the server, so we should be able to use a similar change as in #43406, if that looks good to you?

[aaronrobertshaw]

Another +1 for the box-sizing suggestion.

Added this PR to the dimensions design tools tracking also.

[ndiego]

I'll get box-sizing taken care of today.

[ndiego]

@andrewserong added box-sizing. This required adding a stylesheet. When adding, I noticed an editor stylesheet declared in block.json, but there actually isn't one for this block. Therefore, I removed that as well.

[andrewserong]

Thanks for updating @ndiego!

✅ Padding is working as expected in the post editor now
✅ Padding is working as expected in the site editor and set in global styles

LGTM! ✨