fix(*): Add flex-grow and flex shrink so that the display container takes up the remaining space

Author: mddragnev

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

@@ -718,6 +718,7 @@
     %grid-display-container-tr {
         width: 100%;
         overflow: visible;
+        flex: 1;
     }
 
     %grid-mrl-block {