fix(advance-filtering): add styles for tree and hierarchical grids

Author: georgianastasov

src/app/hierarchical-grid/hierarchical-grid-external-advanced-filtering/hierarchical-grid-external-advanced-filtering.component.scss

@@ -2,6 +2,7 @@
     margin: 15px;
     display: flex;
     flex-flow: column;
+    align-items: stretch;
 }
 
 .photo {
@@ -14,5 +15,6 @@
 
 .advanced-dialog {
     margin-bottom: 2px;
-    height: 300px;
-}
+    height: 325px;
+    overflow-y: auto;
+}

src/app/tree-grid/tree-grid-external-advanced-filtering/tree-grid-external-advanced-filtering.component.scss

@@ -2,9 +2,11 @@
     display: flex;
     flex-flow: column;
     margin: 15px;
+    align-items: stretch;
 }
 
 .advanced-dialog {
     margin-bottom: 2px;
-    height: 300px;
-}
+    height: 325px;
+    overflow-y: auto;
+}