Add tooltip self-reference to address #12320

primarily adds a data- attribute to the tooltip (and thus, the popover)
to create a self-reference.

js/tooltip.js

@@ -166,6 +166,7 @@
         .detach()
         .css({ top: 0, left: 0, display: 'block' })
         .addClass(placement)
+        .data('bs.' + this.type, this)
 
       this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)