fix(toolbar): fix md toolbar so it doesn't flow off the screen

closes #5414

ionic/components/toolbar/toolbar.md.scss

@@ -51,13 +51,11 @@ ion-navbar-section {
 .toolbar-content {
   flex: 1;
   order: map-get($toolbar-order-md, content);
+  max-width: 100%;
 }
 
 .toolbar-title {
   color: $toolbar-md-text-color;
-}
-
-ion-title {
   padding: 0 12px;
   font-size: $toolbar-md-title-font-size;
   font-weight: 500;