fix(51716): find all references in imported JSDoc types (#51729)

tests/cases/fourslash/findAllRefs_importType_js.4.ts

@@ -0,0 +1,18 @@
+/// <reference path="fourslash.ts" />
+
+// @module: commonjs
+// @allowJs: true
+// @checkJs: true
+
+// @Filename: /a.js
+/////**
+//// * @callback /**/A
+//// * @param {unknown} response
+//// */
+////
+////module.exports = {};
+
+// @Filename: /b.js
+/////** @typedef {import("./a").A} A */
+
+verify.baselineFindAllReferences("");