Bug 1756550 - propagate webext global to all dynamically imported modules; r=jonco

The crashes were occurring due to the missing webext global on dynamically imported modules from a referencing script. There is likely a more elegant way to reintroduce this, but for now this is a quick fix.

Differential Revision: https://phabricator.services.mozilla.com/D139511

js/loader/ScriptLoadRequest.cpp

@@ -32,17 +32,19 @@ namespace JS::loader {
 // ScriptFetchOptions
 //////////////////////////////////////////////////////////////
 
-NS_IMPL_CYCLE_COLLECTION(ScriptFetchOptions, mTriggeringPrincipal)
+NS_IMPL_CYCLE_COLLECTION(ScriptFetchOptions, mTriggeringPrincipal,
+                         mWebExtGlobal)
 
 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(ScriptFetchOptions, AddRef)
 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(ScriptFetchOptions, Release)
 
 ScriptFetchOptions::ScriptFetchOptions(
     mozilla::CORSMode aCORSMode, mozilla::dom::ReferrerPolicy aReferrerPolicy,
-    nsIPrincipal* aTriggeringPrincipal)
+    nsIPrincipal* aTriggeringPrincipal, nsIGlobalObject* aWebExtGlobal)
     : mCORSMode(aCORSMode),
       mReferrerPolicy(aReferrerPolicy),
-      mTriggeringPrincipal(aTriggeringPrincipal) {
+      mTriggeringPrincipal(aTriggeringPrincipal),
+      mWebExtGlobal(aWebExtGlobal) {
   MOZ_ASSERT(mTriggeringPrincipal);
 }