Enhance Featured Image Block: Don't include interactive elements within a element

[Mayank-Tripathi32]

Attempts fix for #69728

What?

This PR updates the behavior of the Featured Image block inspector to conditionally display link-related controls based on whether the block is inside a Query Loop or not.

Why?

• Prevents unnecessary link-related controls from appearing when they are not applicable.
• Ensures that link controls are only available when they can be safely used without causing accessibility or usability issues.
• Improves the overall user experience by keeping the block settings relevant to the context.

How?

• If not inside a Query Loop and the featured image is not set, the link-related controls will not be rendered in the inspector.
• If inside a Query Loop, the link-related controls will always be rendered, as they do not introduce any interactive buttons within an tag, ensuring safe usage.
• It also introduces reset functionality to featured image and if its removed then it resets the attributes for link control.

ScreenCast

https://q7utzrengv.ufs.sh/f/Wgl9eBAmTj29CAEDuMerV9jUpFsYux6DJmaP53zkqdRfyBQC

[Mayank-Tripathi32]

Failing tests seems irrelevant to PR.

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[Mayank-Tripathi32]

@t-hamano Ready for review, failing tests seems irrelevant.