Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/jsondiffpatch/lib/contexts/patch.d.ts

@@ -0,0 +1,10 @@
+import Context from './context.js';
+import type { Delta } from '../types.js';
+declare class PatchContext extends Context<unknown> {
+    left: unknown;
+    delta: Delta;
+    pipe: 'patch';
+    nested?: boolean;
+    constructor(left: unknown, delta: Delta);
+}
+export default PatchContext;