btn-close: dark mode data attribute only works when on parent, not when on button directly

[levu42]

Prerequisites

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

Describe the issue

According to the documentation,

Add data-bs-theme="dark" to the .btn-close, or to its parent element, to invert the close button.

It however doesn't work, when the data-bs-theme="dark" is placed on the btn-close itself, it only works, when it's placed on a parent. This is due to the SASS:

@if $enable-dark-mode {
  @include color-mode(dark) {
    .btn-close {
      @include btn-close-white();
    }
  }
}

Reduced test cases

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

Linux

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

Chrome

What version of Bootstrap are you using?

5.3.0

[kczx3]

@tagliala seems to have provided a patch for this to match the documented behavior although I don't see any pull requests for it here. Bummer its gotten pushed twice now for such a seemingly simple patch.

[tagliala]

The changes proposed in #38917 will fix this issue