refactor(srp): remove managed frame planning hook

- derive fullscreen stage planning from pipeline render-graph support
- trim planning-only APIs from the managed SRP bridge and public surface
- update probes and tests to lock the slimmer SRP API boundary

engine/src/Rendering/Pipelines/ManagedScriptableRenderPipelineAsset.cpp

@@ -89,17 +89,6 @@ FinalColorSettings ManagedScriptableRenderPipelineAsset::GetDefaultFinalColorSet
     return m_executionHostAsset.GetDefaultFinalColorSettings();
 }
 
-void ManagedScriptableRenderPipelineAsset::ConfigureCameraFramePlan(
-    CameraFramePlan& plan) const {
-    RenderPipelineAsset::ConfigureCameraFramePlan(plan);
-
-    if (const std::shared_ptr<const ManagedRenderPipelineAssetRuntime> runtime =
-            ResolveManagedAssetRuntime();
-        runtime != nullptr) {
-        runtime->ConfigureCameraFramePlan(plan);
-    }
-}
-
 void SetManagedRenderPipelineBridge(
     std::shared_ptr<const ManagedRenderPipelineBridge> bridge) {
     GetGraphicsSettingsState().SetManagedRenderPipelineBridge(