Backport #32685

Clarify the `$enable-shadows` option in our docs

site/content/docs/4.5/getting-started/theming.md

@@ -275,7 +275,7 @@ You can find and customize these variables for key global options in Bootstrap's
 | -------------------------------------------- | ---------------------------------- | -------------------------------------------------------------------------------------- |
 | `$spacer`                                    | `1rem` (default), or any value > 0 | Specifies the default spacer value to programmatically generate our [spacer utilities]({{< docsref "/utilities/spacing" >}}). |
 | `$enable-rounded`                            | `true` (default) or `false`        | Enables predefined `border-radius` styles on various components. |
-| `$enable-shadows`                            | `true` or `false` (default)        | Enables predefined `box-shadow` styles on various components. |
+| `$enable-shadows`                            | `true` or `false` (default)        | Enables predefined decorative `box-shadow` styles on various components. Does not affect `box-shadow`s used for focus states. |
 | `$enable-gradients`                          | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components. |
 | `$enable-transitions`                        | `true` (default) or `false`        | Enables predefined `transition`s on various components. |
 | `$enable-prefers-reduced-motion-media-query` | `true` (default) or `false`        | Enables the [`prefers-reduced-motion` media query]({{< docsref "/getting-started/accessibility#reduced-motion" >}}), which suppresses certain animations/transitions based on the users' browser/operating system preferences. |