Handle ValueError in scope resets (#4928)

### Description
when async generators throw a `GeneratorExit` we end up with

```
ValueError: <Token var=<ContextVar name='current_scope' default=None at 0x7f04cf05fb50> at 0x7f04ceb17340> was created in a different Context
```

so just catch that and rely on GC to cleanup the contextvar since we
can't be smarter than that anyway for this case.

#### Issues
* resolves: #4925 
* resolves: PY-1886

Author: sl0thentr0py

sentry_sdk/scope.py

@@ -1679,7 +1679,7 @@ def new_scope():
         try:
             # restore original scope
             _current_scope.reset(token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
 
@@ -1717,7 +1717,7 @@ def use_scope(scope):
         try:
             # restore original scope
             _current_scope.reset(token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
 
@@ -1761,12 +1761,12 @@ def isolation_scope():
         # restore original scopes
         try:
             _current_scope.reset(current_token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
         try:
             _isolation_scope.reset(isolation_token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
 
@@ -1808,12 +1808,12 @@ def use_isolation_scope(isolation_scope):
         # restore original scopes
         try:
             _current_scope.reset(current_token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
         try:
             _isolation_scope.reset(isolation_token)
-        except LookupError:
+        except (LookupError, ValueError):
             capture_internal_exception(sys.exc_info())
 
 

tests/test_scope.py

@@ -908,17 +908,18 @@ def test_last_event_id_cleared(sentry_init):
 
 
 @pytest.mark.tests_internal_exceptions
+@pytest.mark.parametrize("error_cls", [LookupError, ValueError])
 @pytest.mark.parametrize(
     "scope_manager",
     [
         new_scope,
         use_scope,
     ],
 )
-def test_handle_lookup_error_on_token_reset_current_scope(scope_manager):
+def test_handle_error_on_token_reset_current_scope(error_cls, scope_manager):
     with mock.patch("sentry_sdk.scope.capture_internal_exception") as mock_capture:
         with mock.patch("sentry_sdk.scope._current_scope") as mock_token_var:
-            mock_token_var.reset.side_effect = LookupError()
+            mock_token_var.reset.side_effect = error_cls()
 
             mock_token = mock.Mock()
             mock_token_var.set.return_value = mock_token
@@ -932,27 +933,28 @@ def test_handle_lookup_error_on_token_reset_current_scope(scope_manager):
                         pass
 
             except Exception:
-                pytest.fail("Context manager should handle LookupError gracefully")
+                pytest.fail(f"Context manager should handle {error_cls} gracefully")
 
             mock_capture.assert_called_once()
             mock_token_var.reset.assert_called_once_with(mock_token)
 
 
 @pytest.mark.tests_internal_exceptions
+@pytest.mark.parametrize("error_cls", [LookupError, ValueError])
 @pytest.mark.parametrize(
     "scope_manager",
     [
         isolation_scope,
         use_isolation_scope,
     ],
 )
-def test_handle_lookup_error_on_token_reset_isolation_scope(scope_manager):
+def test_handle_error_on_token_reset_isolation_scope(error_cls, scope_manager):
     with mock.patch("sentry_sdk.scope.capture_internal_exception") as mock_capture:
         with mock.patch("sentry_sdk.scope._current_scope") as mock_current_scope:
             with mock.patch(
                 "sentry_sdk.scope._isolation_scope"
             ) as mock_isolation_scope:
-                mock_isolation_scope.reset.side_effect = LookupError()
+                mock_isolation_scope.reset.side_effect = error_cls()
                 mock_current_token = mock.Mock()
                 mock_current_scope.set.return_value = mock_current_token
 
@@ -965,7 +967,7 @@ def test_handle_lookup_error_on_token_reset_isolation_scope(scope_manager):
                             pass
 
                 except Exception:
-                    pytest.fail("Context manager should handle LookupError gracefully")
+                    pytest.fail(f"Context manager should handle {error_cls} gracefully")
 
                 mock_capture.assert_called_once()
                 mock_current_scope.reset.assert_called_once_with(mock_current_token)