Feature: added justification option on columns block

[up1512001]

What?

• add block control for justification.

Why?

Fixes #63458

How?

• added JustifyContentControl to columns block.

Screenshots or screencast

Screen.Recording.2024-07-12.at.01.47.00.mov

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[fabiankaegy]

Flex justification controls are already an option that can be enabled via the allowJustification sub key of the layout block support:

https://github.com/WordPress/gutenberg/blob/trunk/docs/reference-guides/block-api/block-supports.md#layout

I think currently allowEditing is removing all those layout options. But this can be refactored to be more specific using the individual support options.

[up1512001]

As we are adding vertical alignment using BlockControls we don't need to display it multiple times.

<BlockControls>
				<BlockVerticalAlignmentToolbar
					onChange={ updateAlignment }
					value={ verticalAlignment }
				/>
			</BlockControls>

[up1512001]

Also if we remove that then vertical alignment will not be applied to individual column.

[up1512001]

Hi, @fabiankaegy can you please review this PR, thanks.

[pengsteven418]

this person up1512001 copies other people content

[up1512001]

this person up1512001 copies other people content

@pengsteven418 please check once before blaming someone this issue is reported by me and I have raise PR for same.

[up1512001]

@talldan can you please review this PR?