Tell xcode it's okay to remove this directory during the clean step

https://gitlab.kitware.com/cmake/cmake/-/issues/22550

Quicksilver/Tools/qsrelease

@@ -26,15 +26,16 @@ BUILT_PRODUCTS_DIR=$(awk '$1 == "BUILT_PRODUCTS_DIR" { print $NF }' < "${SETTING
 
 ## Create the directory (for logging purposes)
 mkdir -p "${BUILT_PRODUCTS_DIR}"
+xattr -w com.apple.xcode.CreatedByBuildSystem true "${BUILT_PRODUCTS_DIR}"
+
 LOG=${BUILT_PRODUCTS_DIR}/build.log
 DMG_TEMP=${BUILT_PRODUCTS_DIR}/dmg
 
 # `xcodebuild clean` sometimes refuses to remove the build directory and
 # fails with error:
 #     Could not delete `/tmp/QS/build` because it was not created by the
 #     build system.
-xcodebuild -scheme 'Quicksilver Distribution' clean ||
-  rm -rf /tmp/QS/build
+xcodebuild -scheme 'Quicksilver Distribution' clean
 
 # Make sure `LOG` and its parents exist
 mkdir -p "$(dirname "${LOG}")"