fix(ivy): emit generic types when needed in defs in .d.ts file (#25406)

Ivy definitions in .d.ts files often reference the type of a class.
Sometimes, those classes have generic type parameters. When this is
the case, ngtsc needs to emit generic type parameters in the .d.ts
files (usually by passing 'any').

PR Close #25406

packages/compiler-cli/src/ngtsc/annotations/src/directive.ts

@@ -156,7 +156,7 @@ export function extractDirectiveMetadata(
     inputs: {...inputsFromMeta, ...inputsFromFields},
     outputs: {...outputsFromMeta, ...outputsFromFields}, queries, selector,
     type: new WrappedNodeExpr(clazz.name !),
-    typeArgumentCount: (clazz.typeParameters || []).length,
+    typeArgumentCount: reflector.getGenericArityOfClass(clazz) || 0,
     typeSourceSpan: null !, usesInheritance, exportAs,
   };
   return {decoratedElements, decorator: directive, metadata};