Bug #1850865 ipad iOS 13.1 modal scrolls horizontally

- put in overflow-x: hidden in modal body

behatnotneeded

Change-Id: I4937825db1bc0c6cb4422330c60e43fde230142f

htdocs/theme/raw/sass/components/_modal.scss

@@ -45,7 +45,8 @@ $width-sm: 90%;
         @include border-bottom-radius(3px);
         max-height: 90%;
         height: 90%;
-        overflow: auto;
+        overflow-y: auto;
+        overflow-x: hidden;
         &.flush {
             padding: 0;
         }