feat(core): add isPromise generic (#34168)

This commit adds generic to `isPromise` function to help with type inference.

PR Close #34168

packages/compiler/src/util.ts

@@ -214,7 +214,7 @@ export function resolveForwardRef(type: any): any {
 /**
  * Determine if the argument is shaped like a Promise
  */
-export function isPromise(obj: any): obj is Promise<any> {
+export function isPromise<T = any>(obj: any): obj is Promise<T> {
   // allow any Promise/A+ compliant thenable.
   // It's up to the caller to ensure that obj.then conforms to the spec
   return !!obj && typeof obj.then === 'function';