Motion Matching: Fix for test build on nightly linux builds (#7522)

Signed-off-by: Benjamin Jillich <jillich@amazon.com>

Gems/MotionMatching/Code/CMakeLists.txt

@@ -121,10 +121,9 @@ if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
     ly_add_googletest(
         NAME Gem::MotionMatching.Tests
     )
-endif()
 
-# If we are a host platform we want to add tools test like editor tests here
-if(PAL_TRAIT_BUILD_HOST_TOOLS)
+    # If we are a host platform we want to add tools test like editor tests here
+    if(PAL_TRAIT_BUILD_HOST_TOOLS)
         ly_add_target(
             NAME MotionMatching.Editor.Tests ${PAL_TRAIT_TEST_TARGET_TYPE}
             NAMESPACE Gem
@@ -144,4 +143,5 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS)
         ly_add_googletest(
             NAME Gem::MotionMatching.Editor.Tests
         )
+    endif()
 endif()