Image widgets should not be forced to consume the entire width

[mlewand]

Is this a bug report or feature request?

🆕 Feature request

💻 Version of CKEditor

CKEditor v5 @ 12.1.0

📋 Steps to reproduce

Image widgets (the wrapper) currently consume entire contianer's width, even if an image is much narrower than the container.

✅ Expected result

Wrapper should be reduced to minimal required width.

❎ Actual result

Wrapper spans over entire container's width.