test: drop now-empty remote runner (#35343)

* test: drop the now-empty remote runner from CI

* move fixtures to spec-main

* remove remote runner

* fix stuff

* remove global-paths hack

* move ts-smoke to spec/

* fix test after merge

* rename spec-main to spec

* no need to ignore spec/node_modules twice

* simplify spec-runner a little

* no need to hash pj/yl twice

* undo lint change to verify-mksnapshot.py

* excessive ..

* update electron_woa_testing.yml

* don't search for test-results-remote.xml

it is never produced now

spec/fixtures/api/context-bridge/context-bridge-mutability/main.js

@@ -0,0 +1,20 @@
+const { app, BrowserWindow } = require('electron');
+const path = require('path');
+
+let win;
+app.whenReady().then(function () {
+  win = new BrowserWindow({
+    webPreferences: {
+      contextIsolation: true,
+      preload: path.join(__dirname, 'preload.js')
+    }
+  });
+
+  win.loadFile('index.html');
+
+  win.webContents.on('console-message', (event, level, message) => {
+    console.log(message);
+  });
+
+  win.webContents.on('did-finish-load', () => app.quit());
+});