Automatically run npm install when running npm start (#35283)

Co-authored-by: Robert Sese <734194+rsese@users.noreply.github.com>

.npmrc

@@ -1,2 +1,7 @@
 # skip installing optional dependencies to avoid issues with troublesome `fsevents` module
 omit=optional
+
+# For 15-25% faster npm install
+# https://www.peterbe.com/plog/benchmarking-npm-install-with-or-without-audit
+# Also we have Dependabot alerts configured in the GitHub repo.
+audit=false