fix: state collision (#4881)

* Add helper for navigating the quick picker

This has problems similar to the menu except instead of closing it gets
re-created which interrupts the hover call and causes the test to fail.
Now it will keep trying just like the menu.

* Add a test for opening a file

* Add test for colliding state

* Update VS Code

This contains the colliding state fix.

vendor/package.json

@@ -7,6 +7,6 @@
     "postinstall": "./postinstall.sh"
   },
   "devDependencies": {
-    "code-oss-dev": "coder/vscode#96e241330d9c44b64897c1e5031e00aa894103db"
+    "code-oss-dev": "coder/vscode#6337ee490d16b7dfd8854d22c998f58d6cd21ef5"
   }
 }