[CP-Stable] Use Linux windows_*_engine orchestrators (#169772)

Cherry-picks https://github.com/flutter/flutter/pull/168941.

This is a pure infra change so release builds do not use a valuable Windows release builder just to spawn other builds.

engine/src/flutter/.ci.yaml

@@ -503,7 +503,7 @@ targets:
       - os=Mac-14
       - cpu=x86
 
-  - name: Windows windows_android_aot_engine
+  - name: Linux windows_android_aot_engine
     recipe: engine_v2/engine_v2
     timeout: 120
     properties:
@@ -513,9 +513,9 @@ targets:
     # Do not remove(https://github.com/flutter/flutter/issues/144644)
     # Scheduler will fail to get the platform
     drone_dimensions:
-      - os=Windows
+      - os=Linux
 
-  - name: Windows windows_host_engine
+  - name: Linux windows_host_engine
     recipe: engine_v2/engine_v2
     timeout: 120
     properties:
@@ -525,7 +525,7 @@ targets:
     # Do not remove(https://github.com/flutter/flutter/issues/144644)
     # Scheduler will fail to get the platform
     drone_dimensions:
-      - os=Windows
+      - os=Linux
 
   - name: Windows windows_host_engine_test
     recipe: engine_v2/engine_v2