chore(*): fix row drag indicator growing too much

Author: mddragnev

projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss

@@ -1453,7 +1453,7 @@
         }
 
         padding-block: 0;
-        flex: 1 0 auto;
+        flex: 0 0 auto;
         background: inherit;
         z-index: 4;
         cursor: move;