Made IsInFocusSubTree const, and other minor refactorings.

Signed-off-by: Danilo Aimini <82231674+AMZN-daimini@users.noreply.github.com>

Code/Framework/AzToolsFramework/AzToolsFramework/FocusMode/FocusModeInterface.h

@@ -33,7 +33,7 @@ namespace AzToolsFramework
         virtual AZ::EntityId GetFocusRoot() = 0;
 
         //! Returns whether the entity id provided is part of the focused sub-tree.
-        virtual bool IsInFocusSubTree(AZ::EntityId entityId) = 0;
+        virtual bool IsInFocusSubTree(AZ::EntityId entityId) const = 0;
     };
 
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/FocusMode/FocusModeSystemComponent.cpp

@@ -79,7 +79,7 @@ namespace AzToolsFramework
         return m_focusRoot;
     }
 
-    bool FocusModeSystemComponent::IsInFocusSubTree(AZ::EntityId entityId)
+    bool FocusModeSystemComponent::IsInFocusSubTree(AZ::EntityId entityId) const
     {
         if (m_focusRoot == AZ::EntityId())
         {

Code/Framework/AzToolsFramework/AzToolsFramework/FocusMode/FocusModeSystemComponent.h

@@ -42,7 +42,7 @@ namespace AzToolsFramework
         void SetFocusRoot(AZ::EntityId entityId) override;
         void ClearFocusRoot() override;
         AZ::EntityId GetFocusRoot() override;
-        bool IsInFocusSubTree(AZ::EntityId entityId) override;
+        bool IsInFocusSubTree(AZ::EntityId entityId) const override;
 
     private:
         AZ::EntityId m_focusRoot;