[lldb/crashlog] Update incorrect help message for --no-crashed-only…

… option (llvm#91162)

This patch rephrases the crashlog `--no-crashed-only` option help
message. This option is mainly used in batch mode to symbolicate and
dump all the threads backtraces, instead of only doing it for the
crashed thread which is the default behavior.

rdar://127391524

Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>
(cherry picked from commit 8585bf7)

lldb/examples/python/crashlog.py

@@ -1645,7 +1645,8 @@ def CreateSymbolicateCrashLogOptions(
         "--no-crashed-only",
         action="store_false",
         dest="crashed_only",
-        help="do not symbolicate the crashed thread",
+        help="in batch mode, symbolicate all threads, not only the crashed one",
+        default=False,
     )
     arg_parser.add_argument(
         "--disasm-depth",