Bug 1872509 - Don't clip checkbox/radio overflow. r=dholbert

Since it's not web-compatible. I had already brought this possibility up
in the comments of whatwg/html#10025, so will
update that PR accordingly.

Remove forceful overflow: hidden for file / date inputs, which was
caught by the tests in the next patch.

Differential Revision: https://phabricator.services.mozilla.com/D197456

UltraBlame original commit: 30b0d1ecdc26a3e4753bef7807739106282ed827

layout/style/res/forms.css

@@ -3261,6 +3261,18 @@ type
 range
 i
 ]
+[
+type
+=
+checkbox
+i
+]
+[
+type
+=
+radio
+i
+]
 )
 {
 overflow
@@ -3986,12 +3998,6 @@ nowrap
 important
 ;
 overflow
-:
-hidden
-!
-important
-;
-overflow
 -
 clip
 -
@@ -6219,12 +6225,6 @@ local
 ]
 )
 {
-overflow
-:
-hidden
-!
-important
-;
 font
 -
 family