chore: always install rules_nodejs_dependencies (#3170)

User install instructions will change to require this, so our nested example/e2e workspaces need to as well.

examples/web_testing/WORKSPACE

diff --git a/examples/web_testing/WORKSPACE b/examples/web_testing/WORKSPACE
index 87fcc02..f33b831 100644
--- a/examples/web_testing/WORKSPACE
+++ b/examples/web_testing/WORKSPACE
@@ -25,6 +25,10 @@
     urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/4.4.0/rules_nodejs-4.4.0.tar.gz"],
 )
 
+load("@build_bazel_rules_nodejs//nodejs:repositories.bzl", "rules_nodejs_dependencies")
+
+rules_nodejs_dependencies()
+
 load("@build_bazel_rules_nodejs//:index.bzl", "yarn_install")
 
 yarn_install(