Improvement alignment between labels and inputs

What does this MR do?

This MR solves issue #17137 (closed) by improving the aligning between the left label and right input field in the /admin/users form.

I removed the extra padding for three labels (Can create group, Access level, and External) by removing the class col-form-label.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

This MR has no risks other than improving the UI.

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Screenshots

Before	After