Xcode: Fix POST_BUILD order in bundle targets on Xcode 16+

XCode 16+ no longer delays our POST_BUILD phase until after bundle files
like `Info.plist` are generated.  Teach the Xcode generator to add
explicit dependencies to the POST_BUILD phase in bundle targets to
ensure the files are created before it runs.

Fixes: #26656

Tests/RunCMake/XcodeProject/BundlePostBuild.cmake

@@ -0,0 +1,15 @@
+enable_language(CXX)
+add_executable(app MACOSX_BUNDLE app.cxx)
+add_library(fw SHARED fw.cxx)
+set_property(TARGET fw PROPERTY FRAMEWORK 1)
+foreach(target IN ITEMS app fw)
+  set_property(TARGET ${target} PROPERTY XCODE_ATTRIBUTE_DEBUG_INFORMATION_FORMAT dwarf-with-dsym)
+  add_custom_command(
+    TARGET ${target} POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E sha256sum
+    [["$DWARF_DSYM_FOLDER_PATH/$DWARF_DSYM_FILE_NAME/Contents/Resources/DWARF/$PRODUCT_NAME"]]
+    [["$DWARF_DSYM_FOLDER_PATH/$DWARF_DSYM_FILE_NAME/Contents/Info.plist"]]
+    [["$TARGET_BUILD_DIR/$EXECUTABLE_PATH"]]
+    [["$TARGET_BUILD_DIR/$INFOPLIST_PATH"]]
+  )
+endforeach()

Tests/RunCMake/XcodeProject/RunCMakeTest.cmake

@@ -91,6 +91,13 @@ if(XCODE_VERSION VERSION_GREATER_EQUAL 12)
 
   XcodeObjectLibsInTwoProjectsMacOS()
 
+  block()
+    set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/BundlePostBuild-build)
+    run_cmake(BundlePostBuild)
+    set(RunCMake_TEST_NO_CLEAN 1)
+    run_cmake_command(BundlePostBuild-build ${CMAKE_COMMAND} --build . --config Debug)
+  endblock()
+
 endif()
 
 function(XcodeSchemaGeneration)

Tests/RunCMake/XcodeProject/app.cxx

@@ -0,0 +1,4 @@
+int main()
+{
+  return 0;
+}

Tests/RunCMake/XcodeProject/fw.cxx

@@ -0,0 +1,4 @@
+int fw()
+{
+  return 0;
+}