Update scss mixins to comply with scss-linting rules (#22151)

* Fixed some linting issues

* Run npm tasks after scss cleanup

* Revert "Run npm tasks after scss cleanup"

This reverts commit 1103a0da68.

* Property sort order for grid

* Let's respest the property order in the mixins

* Respect property sort order in reboot file

* ::-ms-expand is a vendor-prefix, add it to the scss-lint disable

* Revert hover mixin comment

* Fixed missing mixin hover-focus

scss/mixins/_alert.scss

@@ -1,9 +1,9 @@
 // Alerts
 
 @mixin alert-variant($background, $border, $body-color) {
+  color: $body-color;
   background-color: $background;
   border-color: $border;
-  color: $body-color;
 
   hr {
     border-top-color: darken($border, 5%);