Port #19984 to v3

Add :dir() pseudo-class feature requests to Wall of Browser Bugs (#19984)

Refs https://developer.mozilla.org/en-US/docs/Web/CSS/:dir
[skip sauce]

docs/_data/browser-bugs.yml

@@ -68,6 +68,16 @@
   origin: >
     Bootstrap#18228
 
+-
+  browser: >
+    Microsoft Edge
+  summary: >
+    Implement the `:dir()` pseudo-class from Selectors Level 4
+  upstream_bug: >
+    [Edge UserVoice idea #12299532](https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/12299532--dir)
+  origin: >
+    Bootstrap#19984
+
 -
   browser: >
     Firefox
@@ -218,6 +228,16 @@
   origin: >
     Bootstrap#19810
 
+-
+  browser: >
+    Chrome
+  summary: >
+    Implement the `:dir()` pseudo-class from Selectors Level 4
+  upstream_bug: >
+    Chromium#576815
+  origin: >
+    Bootstrap#19984
+
 -
   browser: >
     Chrome (Windows & Linux)
@@ -250,6 +270,16 @@
   origin: >
     Bootstrap#20012
 
+-
+  browser: >
+    Safari
+  summary: >
+    Implement the `:dir()` pseudo-class from Selectors Level 4
+  upstream_bug: >
+    WebKit#64861
+  origin: >
+    Bootstrap#19984
+
 -
   browser: >
     Safari (OS X)