Merge pull request #16856 from IgniteUI/mkirkova/fix-16238-20.1.x

Prevent grids from growing infinitely in flex containers - 20.1.x

Author: ChronosSF

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

@@ -511,6 +511,7 @@
         grid-template-rows: auto auto auto 1fr auto auto;
         grid-template-columns: 100%;
         overflow: hidden;
+        contain: inline-size;
         box-shadow: $grid-shadow;
 
         @if $variant == 'fluent' {