test: terminate WPT workers after test completion

PR-URL: #37627
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

test/common/wpt.js

@@ -299,6 +299,7 @@ class WPTRunner {
 
     this.results = {};
     this.inProgress = new Set();
+    this.workers = new Map();
     this.unexpectedFailures = [];
   }
 
@@ -376,6 +377,7 @@ class WPTRunner {
           scriptsToRun,
         },
       });
+      this.workers.set(testFileName, worker);
 
       worker.on('message', (message) => {
         switch (message.type) {
@@ -501,6 +503,9 @@ class WPTRunner {
       this.resultCallback(filename, { status: 2, name: 'Unknown' });
     }
     this.inProgress.delete(filename);
+    // Always force termination of the worker. Some tests allocate resources
+    // that would otherwise keep it alive.
+    this.workers.get(filename).terminate();
   }
 
   addTestResult(filename, item) {

test/wpt/status/FileAPI/blob.json

@@ -1,6 +1,6 @@
 {
   "Blob-constructor.any.js": {
-    "skip": "https://github.com/nodejs/node/issues/37358"
+    "skip": "Depends on File API"
   },
   "Blob-constructor-dom.window.js": {
     "skip": "Depends on DOM API"