Work towards getting isolated built-in extension compiles

For #271167

This makes it so our built-in extensions can mostly be built using `tsc` on the command line. Previously the extensions were picking up a lot of typing info from the root `node_modules` that meant they weren't truly independent

extensions/github-authentication/package.json

@@ -48,23 +48,24 @@
         ]
       }
     ],
-    "configuration": [{
-      "title": "%config.github-enterprise.title%",
-      "properties": {
-        "github-enterprise.uri": {
-          "type": "string",
-          "markdownDescription": "%config.github-enterprise.uri.description%",
-          "pattern": "^(?:$|(https?)://(?!github\\.com).*)"
-        },
-        "github-authentication.useElectronFetch": {
-          "type": "boolean",
-          "default": true,
-          "scope": "application",
-          "markdownDescription": "%config.github-authentication.useElectronFetch.description%"
+    "configuration": [
+      {
+        "title": "%config.github-enterprise.title%",
+        "properties": {
+          "github-enterprise.uri": {
+            "type": "string",
+            "markdownDescription": "%config.github-enterprise.uri.description%",
+            "pattern": "^(?:$|(https?)://(?!github\\.com).*)"
+          },
+          "github-authentication.useElectronFetch": {
+            "type": "boolean",
+            "default": true,
+            "scope": "application",
+            "markdownDescription": "%config.github-authentication.useElectronFetch.description%"
+          }
         }
       }
-    }
-  ]
+    ]
   },
   "aiKey": "0c6ae279ed8443289764825290e4f9e2-1a736e7c-1324-4338-be46-fc2a58ae4d14-7255",
   "main": "./out/extension.js",
@@ -82,7 +83,7 @@
     "vscode-tas-client": "^0.1.84"
   },
   "devDependencies": {
-    "@types/mocha": "^9.1.1",
+    "@types/mocha": "^10.0.10",
     "@types/node": "22.x",
     "@types/node-fetch": "^2.5.7"
   },