Disabled form-floating input uses wrong colour

[lonix1]

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

A disabled form-floating input uses the wrong colour.

Reduced test cases

Demo shows:

• disabled input in grey - correct
• disabled form-floating input in black - incorrect

https://codepen.io/vwhzvdkyrlmuapzyih/pen/MWXgVmm

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

Linux

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

Firefox

What version of Bootstrap are you using?

5.2.2

[julien-deramond]

By adding the following code to the ongoing PR (#37299) about floating labels:

> .form-control:disabled ~ label {
    color: $form-floating-disabled-color;
}

we'd get this rendering:

For the select, it seems to be consistent with Select > Disabled.

For the floating labels (without values), if we do that, don't we confuse a disabled floating label (that displays only the label) with a disabled input?

@mdo Thoughts?

If this modification is OK, I can add it in my PR.

[mdo]

I think we do risk that, but generally that's okay I think as the end result is the same—an input with a label is disabled. I merged your other PR without seeing this—want to cut a new one if you're able?