macOS: CMake: Fix last CMP0177 policy warnings

This commit fixes the last few CMake CMP0177 policy warnings on macOS.

Follow-up to: #130602 and 536937b4d4

Pull Request: https://projects.blender.org/blender/blender/pulls/131219

source/creator/CMakeLists.txt

@@ -1587,18 +1587,18 @@ elseif(APPLE)
 
   install(
     FILES ${OSX_APP_SOURCEDIR}/Contents/PkgInfo
-    DESTINATION "./Blender.app/Contents"
+    DESTINATION "Blender.app/Contents"
   )
 
   install_dir(
     ${OSX_APP_SOURCEDIR}/Contents/Resources
-    "./Blender.app/Contents"
+    "Blender.app/Contents"
   )
 
   if(WITH_BLENDER_THUMBNAILER)
     install(
       TARGETS blender-thumbnailer
-      DESTINATION "./Blender.app/Contents/MacOS"
+      DESTINATION "Blender.app/Contents/MacOS"
     )
   endif()
 
@@ -1657,7 +1657,7 @@ elseif(APPLE)
     unset(PYTHON_EXECUTABLE_NAME_ONLY)
     install(
       PROGRAMS ${CMAKE_BINARY_DIR}/release/darwin/scripts/blender-system-info.sh
-      DESTINATION "./Blender.app/Contents/Resources"
+      DESTINATION "Blender.app/Contents/Resources"
     )
   endif()