Use keyboard to type external uri

Not sure why but somehow the chat window input is getting filled instead
of the quick input widget.  Maybe waiting for the selector and then
typing will fix it.

Author: code-asher

test/e2e/extensions.test.ts

@@ -54,9 +54,9 @@ function runExternalUriTests(proxyEndpointTemplate?: string) {
       await codeServerPage.waitForTestExtensionLoaded()
       await codeServerPage.executeCommandViaMenus("code-server: asExternalUri test")
 
-      const inputBox = codeServerPage.page.locator(".quick-input-widget input")
-      await inputBox.fill(input)
-      await inputBox.press("Enter")
+      await codeServerPage.page.waitForSelector(".quick-input-widget")
+      await codeServerPage.page.keyboard.type(input)
+      await codeServerPage.page.keyboard.press("Enter")
 
       // The test extension displays URI.toString(), which also encodes query delimiters.
       const output = `${proxyBase.replace(/\/$/, "")}${suffix}`