Wall of Browser Bugs: Update CSS multi-column entries (#23168)

Remove https://bugzilla.mozilla.org/show_bug.cgi?id=1282363
because CSSWG deemed Firefox's behavior to be the correct behavior per
w3c/csswg-drafts#314

Replace it with a Chrome bug about changing Chrome to follow the spec & Firefox:
https://bugs.chromium.org/p/chromium/issues/detail?id=269061

_data/browser-bugs.yml

@@ -138,16 +138,6 @@
   origin: >
     Bootstrap#19670
 
--
-  browser: >
-    Firefox
-  summary: >
-    `position: absolute` element that's wider than its column renders differently than other browsers
-  upstream_bug: >
-    Mozilla#1282363
-  origin: >
-    Bootstrap#20161
-
 -
   browser: >
     Firefox
@@ -238,6 +228,16 @@
   origin: >
     Bootstrap#12832
 
+-
+  browser: >
+    Chrome
+  summary: >
+    `position: absolute` element that's wider than its column is incorrectly clipped to column boundary
+  upstream_bug: >
+    Chromium#269061
+  origin: >
+    Bootstrap#20161
+
 -
   browser: >
     Chrome (Windows & Linux)