fix(richtext-lexical): prevent runtime error if using TextStateFeature without props (#12668)

TextStateFeature wasn't intended to be used without props, but it still
shouldn't throw a runtime error if used that way. Perhaps some users are
experimenting until they decide on the props.

Fixes #12518

packages/richtext-lexical/src/features/textState/feature.server.ts

@@ -69,7 +69,7 @@ export const TextStateFeature = createServerFeature<
     return {
       ClientFeature: '@payloadcms/richtext-lexical/client#TextStateFeatureClient',
       clientFeatureProps: {
-        state: props.state,
+        state: props?.state,
       },
     }
   },