Merge branch 'ide-small-scroll-area' into 'master'

Fixed small scroll area in Web IDE

Closes #50242

See merge request gitlab-org/gitlab-ce!21160

app/assets/javascripts/ide/components/ide_tree_list.vue

@@ -61,7 +61,7 @@ export default {
         <slot name="header"></slot>
       </header>
       <div
-        class="ide-tree-body"
+        class="ide-tree-body h-100"
       >
         <repo-file
           v-for="file in currentTree.tree"