What's Changed
- Added schema validation rule to ensure that types are defined by @glen-84 in #8806
- Renamed DirectiveEvent to DirectiveDefinitionEvent by @glen-84 in #8807
- Ignored introspection types in TypeIsDefinedRule by @glen-84 in #8808
- [Fusion] Added schema validation to the SourceSchemaParser by @glen-84 in #8809
- Re-add RequestExecutorSetup.SchemaBuilder by @tobias-tengler in #8810
- [Fusion] Properly update RequestExecutorProxy by @tobias-tengler in #8813
Full Changelog: 16.0.0-p.8.15...16.0.0-p.8.16