TCA-593 - fix the content height for my learning tabs

Author: vas3a

src-ts/tools/learn/my-learning/completed-tab/CompletedTab.module.scss

@@ -4,6 +4,7 @@
     display: flex;
     gap: $space-xxl;
     flex-wrap: wrap;
+    flex: 1;
 
     > * {
         flex: 0 1 calc(50% - calc($space-xxl / 2));

src-ts/tools/learn/my-learning/in-progress-tab/InProgressTab.module.scss

@@ -5,6 +5,7 @@
     display: flex;
     flex-direction: column;
     position: relative;
+    flex: 1;
 
     @include ltemd {
         gap: $space-xxl;