chore: Rename CompositeTarget enum (#35263)

* chore: Rename CompositeTarget enum

Signed-off-by: DK Liao <dklassic@gmail.com>

sync name in other documents

Signed-off-by: DK Liao <dklassic@gmail.com>

sync more name in other documents

Signed-off-by: DK Liao <dklassic@gmail.com>

* Fix Android/ohos

Signed-off-by: DK Liao <dklassic@gmail.com>

---------

Signed-off-by: DK Liao <dklassic@gmail.com>

ports/servoshell/desktop/app.rs

@@ -209,9 +209,9 @@ impl App {
         let embedder = Box::new(EmbedderCallbacks::new(self.waker.clone(), xr_discovery));
 
         let composite_target = if self.minibrowser.is_some() {
-            CompositeTarget::Fbo
+            CompositeTarget::OffscreenFbo
         } else {
-            CompositeTarget::Window
+            CompositeTarget::ContextFbo
         };
         let servo = Servo::new(
             self.opts.clone(),

ports/servoshell/egl/android/simpleservo.rs

@@ -113,7 +113,7 @@ pub fn init(
         embedder_callbacks,
         window_callbacks.clone(),
         None,
-        CompositeTarget::Window,
+        CompositeTarget::ContextFbo,
     );
 
     SERVO.with(|s| {

ports/servoshell/egl/ohos/simpleservo.rs

@@ -114,7 +114,7 @@ pub fn init(
         embedder_callbacks,
         window_callbacks.clone(),
         None, /* user_agent */
-        CompositeTarget::Window,
+        CompositeTarget::ContextFbo,
     );
 
     let servo_glue = ServoGlue::new(