Refact/multi window soft rendering (#8343)

* refact: multi_window_soft_rendering

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: window pos, potential wait for image

Signed-off-by: fufesou <linlong1266@gmail.com>

* comments

Signed-off-by: fufesou <linlong1266@gmail.com>

* remove debug print

Signed-off-by: fufesou <linlong1266@gmail.com>

* explicitly set rgba_data.size_got to false after init

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: multi window, merge images, render with texture

Signed-off-by: fufesou <linlong1266@gmail.com>

* revert, flutter.rs, rgba valid

Signed-off-by: fufesou <linlong1266@gmail.com>

* Add displays index before sending capture msg

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: multi window, soft rendering

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: build

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>

flutter/lib/common/widgets/toolbar.dart

@@ -586,7 +586,6 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
   if (pi.isSupportMultiDisplay &&
       PrivacyModeState.find(id).isEmpty &&
       pi.displaysCount.value > 1 &&
-      bind.mainGetUseTextureRender() &&
       bind.mainGetUserDefaultOption(key: kKeyShowMonitorsToolbar) == 'Y') {
     final value =
         bind.sessionGetDisplaysAsIndividualWindows(sessionId: ffi.sessionId) ==
@@ -602,9 +601,7 @@ Future<List<TToggleMenu>> toolbarDisplayToggle(
   }
 
   final isMultiScreens = !isWeb && (await getScreenRectList()).length > 1;
-  if (bind.mainGetUseTextureRender() &&
-      pi.isSupportMultiDisplay &&
-      isMultiScreens) {
+  if (pi.isSupportMultiDisplay && isMultiScreens) {
     final value = bind.sessionGetUseAllMyDisplaysForTheRemoteSession(
             sessionId: ffi.sessionId) ==
         'Y';