Add more test coverage for $ReadOnlyArray<UnsafeMixed> in component codegen (#49349)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49349

Follow-up on D69454101 to add more test coverage for `$ReadOnlyArray<UnsafeMixed>` as a component prop. The new type was missing from the CodegenSchema, which revealed some gaps in tests.

Changelog: [Internal]

Reviewed By: fabriziocucci

Differential Revision: D69488035

fbshipit-source-id: 19895e55e5ec4d89a790f1c388de9eea025a316c

packages/react-native-codegen/src/generators/components/GeneratePropsJavaPojo/PojoCollector.js

@@ -80,6 +80,7 @@ export type PojoTypeAnnotation =
         | DoubleTypeAnnotation
         | FloatTypeAnnotation
         | Int32TypeAnnotation
+        | MixedTypeAnnotation
         | $ReadOnly<{
             type: 'StringEnumTypeAnnotation',
             default: string,

packages/react-native-codegen/src/generators/components/GeneratePropsJavaPojo/serializePojo.js

@@ -148,6 +148,10 @@ function toJavaType(
           case 'Int32TypeAnnotation': {
             return 'Integer';
           }
+          case 'MixedTypeAnnotation': {
+            importDynamic();
+            return 'Dynamic';
+          }
 
           /**
            * Enums
@@ -214,7 +218,7 @@ function toJavaType(
           default: {
             (elementType.type: empty);
             throw new Error(
-              `Unrecognized PojoTypeAnnotation Array element type annotation '${typeAnnotation.type}'`,
+              `Unrecognized PojoTypeAnnotation Array element type annotation '${elementType.type}'`,
             );
           }
         }