Add path to loader for tas-client-umd

It's a new module used by 1.50.0.

src/browser/pages/vscode.ts

@@ -41,6 +41,7 @@ try {
     "xterm-addon-unicode11": `../node_modules/xterm-addon-unicode11/lib/xterm-addon-unicode11.js`,
     "xterm-addon-webgl": `../node_modules/xterm-addon-webgl/lib/xterm-addon-webgl.js`,
     "semver-umd": `../node_modules/semver-umd/lib/semver-umd.js`,
+    "tas-client-umd": `../node_modules/tas-client-umd/lib/tas-client-umd.js`,
     "iconv-lite-umd": `../node_modules/iconv-lite-umd/lib/iconv-lite-umd.js`,
     jschardet: `../node_modules/jschardet/dist/jschardet.min.js`,
   },