fix(styling): Row Move icon shouldn't show extra dot

- it looks like an extra dot on the bottom right corner of the icon container was added, just using `display: block` instead of `inline-block` fixes the issue
![image](https://github.com/ghiscoding/slickgrid-universal/assets/643976/e1035dcc-bff6-4e6b-a292-06c1aa9e95a6)

- also remove duplicate ms-select styling import

packages/common/src/styles/slick-plugins.scss

@@ -1,7 +1,6 @@
 /* sass variables */
 @import './variables';
 @import './sass-utilities';
-@import 'multiple-select-vanilla/dist/styles/sass/multiple-select.scss';
 
 // ----------------------------------------------
 // Column Picker & Grid Menu Controls
@@ -554,7 +553,7 @@ li.hidden {
 
   .slick-row-move-column {
     background-color: currentColor;
-    display: inline-block;
+    display: block;
     height: 1em;
     width: 1em;
     font-size: var(--slick-row-move-plugin-icon-font-size, $slick-row-move-plugin-icon-font-size);