Fix some bugs and major imporvment

Author: mortezafs

dist/select2-bootstrap5.css

@@ -168,7 +168,7 @@
 
   .select2-results {
     & > .select2-results__options {
-      max-height: 60vh;
+      max-height: 200vh;
       overflow-y: auto;
     }
   }