Update media-text focalPoint conditional rendering.

[kjohnson]

Description

The <FocalPointPicker /> has an explicit dependency of imageFill, but also an implicit dependency of mediaUrl, which may result in an empty <FocalPointPicker /> when imageFill is enabled by default in an <InnerBlock /> template.

This change includes an explicit check for mediaUrl, in addition to imageFill, so that the <FocalPointPicker /> does not render empty.

How has this been tested?

Having a custom block using an <InnerBlock /> template which includes the media-text block with imageFill set to true.

const blockTemplate = [
	[ 'core/media-text', {
		imageFill: true,
	}, [
		[ 'core/heading', {
			placeholder: __( 'Heading', 'give' ),
		} ],
		[ 'core/paragraph', {
			placeholder: __( 'Summary', 'give' ),
		} ],
	] ],
];

Insert the custom block, which will not have an image set.

The focal point setting in the sidebar is not rendered.

Screenshots

Before	After

Types of changes

Bug fix (non-breaking change which fixes an issue)

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.

[jorgefilipecosta]

LGTM 👍