Apply word-wrap:break-word to Tooltips and Popovers

Fixes #16871 for v4

scss/_tooltip.scss

@@ -7,6 +7,8 @@
   // So reset our font and text properties to avoid inheriting weird values.
   @include reset-text();
   font-size: $font-size-sm;
+  // Allow breaking very long words so they don't overflow the tooltip's bounds
+  word-wrap: break-word;
   opacity: 0;
 
   &.in { opacity: $tooltip-opacity; }