Layout: use Au in ContentSizes (#31135)

* use app_units

* resolve errors in table layout

* fmt

* add back current_line.min_content

* update expectation

* review fix

components/layout_2020/replaced.rs

@@ -241,8 +241,8 @@ impl ReplacedContent {
             .inline
             .unwrap_or(Length::zero());
         ContentSizes {
-            min_content: inline,
-            max_content: inline,
+            min_content: inline.into(),
+            max_content: inline.into(),
         }
     }