Fix image size feature

[jeyip]

Fixes this issue posted in wp-calyspo Automattic/wp-calypso#43197

Description

The image sizing feature was entirely non-functional.

It looks like the culprit was a PR that refactored the Image Block a month ago. To verify, I also tested the changes before the specific commit was merged (image sizing worked)

In the updateImage method, the newUrl was inadvertently omitted from attribute updates. As a result, the image size control wasn't displaying changes in the user interface.

How has this been tested?

• Set up a local instance of WordPress and Gutenberg by following instructions here
• Navigate to the Gutenberg editor my sites -> posts -> Add New Post
• Create an image block
• Upload or select an image from the media library to display
• Click on the settings cog
• Select the image
• Change image size

Screenshots

Types of changes

Bug fix

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.

[youknowriad]

👍

[youknowriad]

Thanks for the fix.

[github-actions]

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