fix: Sass if() function deprecation warning in Sass 1.95.0+ (#5607)

* Initial plan

* Fix SASS deprecation warning for if() function in arr-join

Co-authored-by: mfranzke <[email protected]>

* Create funny-guests-retire.md

* Update funny-guests-retire.md

* refactor: optimizing via stylelint

* refactor: regenerated package lock file

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: mfranzke <[email protected]>
Co-authored-by: Maximilian Franzke <[email protected]>

Author: Copilot

.changeset/funny-guests-retire.md

@@ -0,0 +1,5 @@
+---
+"@db-ux/core-components": patch
+---
+
+fix: deprecation warning for SASS `if()` function

packages/components/src/styles/internal/_stack-components.scss

@@ -21,11 +21,12 @@ $stack-gaps: (
 
 	@for $i from 1 through list.length($list) {
 		$e: list.nth($list, $i);
-		$result: if(
-			$i != list.length($list),
-			$result#{$e}#{$glue},
-			$result#{$e}
-		);
+
+		@if $i != list.length($list) {
+			$result: $result#{$e}#{$glue};
+		} @else {
+			$result: $result#{$e};
+		}
 	}
 
 	@return $result;