Fix inversion of only_active_thread when all_threads is set

`all_threads` and `only_active_thread` are mutually exclusive.
The non-free-threaded code path incorrectly passed
`only_active_thread=bool(all_threads)`, which inverted
the intended semantics.
Fix this by negating `all_threads`.

Signed-off-by: Yongtao Huang <yongtaoh2022@gmail.com>

Author: hyongtao-code

Lib/profiling/sampling/sample.py

@@ -72,7 +72,7 @@ def _new_unwinder(self, native, gc, opcodes, skip_non_matching_threads):
             )
         else:
             unwinder = _remote_debugging.RemoteUnwinder(
-                self.pid, only_active_thread=bool(self.all_threads), mode=self.mode, native=native, gc=gc,
+                self.pid, only_active_thread=(not self.all_threads), mode=self.mode, native=native, gc=gc,
                 opcodes=opcodes, skip_non_matching_threads=skip_non_matching_threads,
                 cache_frames=True, stats=self.collect_stats
             )