Add trimming to "Shape type" field in placements

[MikeKry]

I would like to propose a small quality-of-life improvement: automatically trim leading and trailing whitespace in the Shape Type field within placements.

I think there aren't any valid use cases where whitespace in the shape name is used.

Is your feature request related to a problem?

We spent a considerable amount of time debugging why a particular placement was not working, only to discover that the issue was caused by unintended whitespace in the Shape Type field.

Describe the solution you'd like

Automatically trim leading and trailing whitespace in the Shape Type field.

Alternatively, display a validation warning if whitespace is detected.

This would help avoiding similar issues in the future.

[MikeKry]

I can also make a PR if this is approved, but maybe this could be a task for AI?

[hishamco]

Please do it

[github-actions]

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[sebastienros]

Maybe do the whole sanitization on editor and save (in case it's created not from the editor).