Disabled floating labels look bad after merging #37125

Created by: AgentSmith0

Prerequisites

• I have searched for duplicate or closed issues
• I have validated any HTML to avoid common problems
• I have read the contributing guidelines

Describe the issue

I noticed that a disabled floating label looks pretty bad due to the changes in https://github.com/twbs/bootstrap/pull/37125.

And this is how it looks with dark mode enabled (https://github.com/twbs/bootstrap/pull/35857):

Reduced test cases

Look at any floating label with a disabled input element.

What operating system(s) are you seeing the problem on?

Windows, macOS, Android, iOS, Linux

What browser(s) are you seeing the problem on?

Chrome, Safari, Firefox, Microsoft Edge, Opera

What version of Bootstrap are you using?

main branch