Add Wall of Browser Bugs entry for #19670 for Edge (#20037)

See https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7787318/
Refs #19670

[skip sauce]

Author: cvrebert

docs/_data/browser-bugs.yml

@@ -78,6 +78,16 @@
   origin: >
     Bootstrap#19984
 
+-
+  browser: >
+    Microsoft Edge
+  summary: >
+    Hovering over descendant SVG element fires `mouseleave` event at ancestor
+  upstream_bug: >
+    Edge#7787318
+  origin: >
+    Bootstrap#19670
+
 -
   browser: >
     Firefox