Do not evaluate tracy.cmake when MLN_USE_TRACY is false (#2664)

CMakeLists.txt

@@ -1381,7 +1381,7 @@ target_link_libraries(
         Mapbox::Base::geojson.hpp
         Mapbox::Base::geometry.hpp
         Mapbox::Base::variant
-        TracyClient
+        $<$<BOOL:${MLN_USE_TRACY}>:TracyClient>
         unordered_dense
 )
 
@@ -1412,7 +1412,6 @@ export(TARGETS
     mbgl-vendor-unique_resource
     mbgl-vendor-vector-tile
     mbgl-vendor-wagyu
-    TracyClient
     unordered_dense
 
     FILE MapboxCoreTargets.cmake

vendor/tracy.cmake

@@ -1,6 +1,8 @@
 if (MLN_USE_TRACY)
     add_definitions(-DTRACY_ENABLE)
     add_definitions(-DMLN_TRACY_ENABLE)
+else()
+    return()
 endif()
 
 include(FetchContent)