Bug 1698266 - Annotate a test as fuzzy on macOS with native theme. r=mstange

I don't see any obvious snapping mistakes in bug 1077365, so this looks
just like antialiasing.

Differential Revision: https://phabricator.services.mozilla.com/D108928

layout/reftests/forms/input/datetime/reftest.list

@@ -13,7 +13,7 @@ fuzzy-if(!nativeThemePref,0-25,0-2) == time-small-height.html time-small-height-
 == time-small-width-height.html time-small-width-height-ref.html
 
 # content (text) should be left aligned
-fuzzy-if(Android,0-4,0-8) == time-content-left-aligned.html time-content-left-aligned-ref.html
+fuzzy-if(Android,0-4,0-8) fuzzy-if(cocoaWidget&&nativeThemePref,6-6,48-48) == time-content-left-aligned.html time-content-left-aligned-ref.html
 
 # reset button should be right aligned
 skip-if(Android) == time-reset-button-right-aligned.html time-reset-button-right-aligned-ref.html # bug 1372062