feat: Add tunnel by default (#4399)

* feat: Add tunnel by default

If an access URL is not specified, we will always tunnel.

This is from community-member feedback who exclaimed that
it's confusing having the default for `coder server` display
a warning message, and I agree.

There is very little (maybe none) in running `coder server`
without tunnel and without an access URL, so this seems like
overall a much better UX.

* Update install.sh

Co-authored-by: Ben Potter <ben@coder.com>

* Update docs/install/packages.md

Co-authored-by: Ben Potter <ben@coder.com>

* Fix reset pass test

* Fix e2e test

Co-authored-by: Ben Potter <ben@coder.com>

site/e2e/playwright.config.ts

@@ -24,7 +24,7 @@ const config: PlaywrightTestConfig = {
     command: `go run -tags embed ${path.join(
       __dirname,
       "../../enterprise/cmd/coder/main.go",
-    )} server --in-memory`,
+    )} server --in-memory --access-url 127.0.0.1:${basePort}`,
     port: basePort,
     timeout: 120 * 10000,
     reuseExistingServer: false,