fix(potel): Set POTelSpan on current scope

sentry_sdk/tracing.py

@@ -1283,10 +1283,19 @@ def __enter__(self):
             # set as the implicit current context
             self._ctx_token = context.attach(ctx)
 
+        self._scope_manager = sentry_sdk.new_scope()
+        scope = self._scope_manager.__enter__()
+        scope.span = self
+
         return self
 
     def __exit__(self, ty, value, tb):
         # type: (Optional[Any], Optional[Any], Optional[Any]) -> None
+        self._scope_manager.__exit__(ty, value, tb)
+        del (
+            self._scope_manager
+        )  # Eliminate circular reference which could prevent garbage collection
+
         self._otel_span.end()
         # XXX set status to error if unset and an exception occurred?
         if self._active: