fast_adhoc: also accept /var/select/developer_dir

Summary: Per https://www.internalfb.com/diff/D106547509?dst_version_fbid=1507671717725399&transaction_fbid=1031507576074424

Reviewed By: IanChilds

Differential Revision: D108192640

fbshipit-source-id: 97d16b88212f2733261b7ae9ce8838c7f7ecf2eb

Author: watwars

prelude/apple/tools/code_signing/fast_adhoc.py

@@ -62,7 +62,11 @@ def _logged_subprocess_run(
 
 def is_fast_adhoc_codesign_allowed(probe_enabled: bool) -> bool:
     if sys.platform == "darwin":
-        if not os.path.exists("/var/db/xcode_select_link"):
+        # Xcode's active-developer-dir symlink is /var/db/xcode_select_link on
+        # older macOS and /var/select/developer_dir on Sonoma+/Xcode 15+.
+        if not os.path.exists("/var/db/xcode_select_link") and not os.path.exists(
+            "/var/select/developer_dir"
+        ):
             _LOGGER.info(
                 "Developer tools do not exist, cannot use `otool`, fast adhoc signing not allowed"
             )