Allow Group block contents to toggle between "centered" and "full-width" mode.

[kjellr]

Following up from #15210.

• Add a "centered column" toolbar control (possibly using this icon). This will be on by default.
• When this control is off, we'll remove (or ignore) the inner div from the Group block.
• When this control is off, we'll also disable all wide/full controls for child blocks. All children of the group block will take up all available horizontal space within the group block.

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"Centered column" is turned on:

"Centered Column" is turned off:

[draganescu]

Hi @kjellr isn't this the same as the current wide/full setting on the Group block. The example in the second picture above can be achieved with setting the group to full and a cover to full.

[kjellr]

Sort of. I think the goal of this was actually to have a setting so that even interior blocks without wide/full options (like a paragraph for example) would still take up the full width in there.

But that said, I think there are a bunch of potential ways around this. I'm not totally sure it makes sense to keep this open for now.

[draganescu]

In this case I'll close it and we can reopen at any time :) Thanks!