[DisplayList] Add support for clipOval to leverage Impeller optimization (#53622)

Impeller supports `ClipOval` and will detect oval paths and rrects and use that call instead when appropriate. Adding support for `ClipOval` to DisplayList allows that optimization code to be moved up into the recording process.

Author: flar

display_list/display_list.h

@@ -98,9 +98,11 @@ namespace flutter {
   V(TransformReset)                 \
                                     \
   V(ClipIntersectRect)              \
+  V(ClipIntersectOval)              \
   V(ClipIntersectRRect)             \
   V(ClipIntersectPath)              \
   V(ClipDifferenceRect)             \
+  V(ClipDifferenceOval)             \
   V(ClipDifferenceRRect)            \
   V(ClipDifferencePath)             \
                                     \