Add Wall of Browser Bugs entry for #19810 (#20021)

Refs https://crbug.com/597642
Closes #19810

[skip sauce]

docs/_data/browser-bugs.yml

@@ -188,6 +188,16 @@
   origin: >
     Bootstrap#17438, Bootstrap#14237
 
+-
+  browser: >
+    Chrome
+  summary: >
+    Clicking scrollbar in `<select multiple>` with overflowed options will select nearby `<option>`
+  upstream_bug: >
+    Chromium#597642
+  origin: >
+    Bootstrap#19810
+
 -
   browser: >
     Chrome (Windows & Linux)