Removing $<TARGET_OBJECTS::Gem...> usage from project templates (#18182) (#18191)

Signed-off-by: Steve Pham <[email protected]>

Templates/CppToolGem/Template/Code/CMakeLists.txt

@@ -143,7 +143,7 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS)
         BUILD_DEPENDENCIES
             PUBLIC
                 AZ::AzToolsFramework
-                $<TARGET_OBJECTS:Gem::${gem_name}.Private.Object>
+                ${gem_name}.Private.Object
     )
 
     ly_add_target(

Templates/GraphicsGem/Template/Code/CMakeLists.txt

@@ -149,7 +149,7 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS)
         BUILD_DEPENDENCIES
             PUBLIC
                 AZ::AzToolsFramework
-                $<TARGET_OBJECTS:Gem::${gem_name}.Private.Object>
+                ${gem_name}.Private.Object
                 Gem::Atom_Utils.Static
                 Gem::Atom_Feature_Common.Static
                 Gem::CommonFeaturesAtom.Static

Templates/UnifiedMultiplayerGem/Template/Code/CMakeLists.txt

@@ -222,7 +222,7 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS)
         BUILD_DEPENDENCIES
             PUBLIC
                 AZ::AzToolsFramework
-                $<TARGET_OBJECTS:Gem::${gem_name}.Unified.Private.Object>
+                ${gem_name}.Unified.Private.Object
     )
 
     ly_add_target(