gh-102765: Update ntpath.isdir/isfile/islink/exists to use GetFileInformationByName when available (GH-103485)

Author: finnagin

Include/internal/pycore_fileutils_windows.h

@@ -75,6 +75,24 @@ static inline BOOL _Py_GetFileInformationByName(
     return GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize);
 }
 
+static inline BOOL _Py_GetFileInformationByName_ErrorIsTrustworthy(int error)
+{
+    switch(error) {
+        case ERROR_FILE_NOT_FOUND:
+        case ERROR_PATH_NOT_FOUND:
+        case ERROR_NOT_READY:
+        case ERROR_BAD_NET_NAME:
+        case ERROR_BAD_NETPATH:
+        case ERROR_BAD_PATHNAME:
+        case ERROR_INVALID_NAME:
+        case ERROR_FILENAME_EXCED_RANGE:
+            return TRUE;
+        case ERROR_NOT_SUPPORTED:
+            return FALSE;
+    }
+    return FALSE;
+}
+
 #endif
 
 #endif