lib: stop installing fetch if no_browser_globals is true

Fixes: nodejs#41816
Signed-off-by: Darshan Sen <raisinten@gmail.com>

PR-URL: nodejs#41969
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Nitzan Uziely <linkgoron@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

lib/internal/bootstrap/pre_execution.js

@@ -147,7 +147,8 @@ function setupWarningHandler() {
 
 // https://fetch.spec.whatwg.org/
 function setupFetch() {
-  if (!getOptionValue('--experimental-fetch')) {
+  if (process.config.variables.node_no_browser_globals ||
+      !getOptionValue('--experimental-fetch')) {
     return;
   }