Fix embedder glfw examples cmake subdirectory path error (#48013)

Fix just a cmake glfw subdirectory path error in embedder examples.

Fix: flutter/flutter#138340

Author: hongeSunCoder

examples/glfw/CMakeLists.txt

@@ -12,9 +12,9 @@ option(GLFW_BUILD_EXAMPLES "" OFF)
 option(GLFW_BUILD_TESTS "" OFF)
 option(GLFW_BUILD_DOCS "" OFF)
 option(GLFW_INSTALL "" OFF)
-add_subdirectory(${CMAKE_SOURCE_DIR}/../../../third_party/glfw glfw)
+add_subdirectory(${CMAKE_SOURCE_DIR}/../../third_party/glfw glfw)
 target_link_libraries(flutter_glfw glfw)
-include_directories(${CMAKE_SOURCE_DIR}/../../../third_party/glfw/include)
+include_directories(${CMAKE_SOURCE_DIR}/../../third_party/glfw/include)
 
 ############################################################
 # Flutter Engine

examples/glfw_drm/CMakeLists.txt

@@ -13,9 +13,9 @@ option(GLFW_BUILD_DOCS "" OFF)
 option(GLFW_INSTALL "" OFF)
 find_package(OpenGL REQUIRED COMPONENTS EGL)
 include_directories(${OPENGL_INCLUDE_DIRS})
-add_subdirectory(${CMAKE_SOURCE_DIR}/../../../third_party/glfw glfw)
+add_subdirectory(${CMAKE_SOURCE_DIR}/../../third_party/glfw glfw)
 target_link_libraries(flutter_glfw glfw OpenGL::EGL)
-include_directories(${CMAKE_SOURCE_DIR}/../../../third_party/glfw/include)
+include_directories(${CMAKE_SOURCE_DIR}/../../third_party/glfw/include)
 
 ############################################################
 # Flutter Engine

examples/vulkan_glfw/CMakeLists.txt

@@ -30,7 +30,7 @@ target_link_libraries(${EXE_NAME} PRIVATE Vulkan::Vulkan)
 
 # Dependency: GLFW
 
-set(GLFW_REPOSITORY ${CMAKE_SOURCE_DIR}/../../../third_party/glfw)
+set(GLFW_REPOSITORY ${CMAKE_SOURCE_DIR}/../../third_party/glfw)
 
 set(BUILD_SHARED_LIBS OFF)
 set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)