🐛 Bug: Logo option parsing includes a type property

[JoshuaKGoldberg]

Bug Report Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Expected

blockReadme should generate a logo that only has the known good properties: alt, height, src, and width.

Actual

I'm seeing it also include a type property.

I debugged a bit and it comes from returning the parsed size object directly:

create-typescript-app/src/shared/options/readLogoSizing.ts

Lines 26 to 28 in 398e947

	if (size.height <= maximum && size.width <= maximum) {
	return size;
	}

Additional Info

Prototyped in #1839.

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