Use null for RequestInit.window (microsoft#1147)

Author: PaperStrike

baselines/dom.generated.d.ts

@@ -1463,7 +1463,7 @@ interface RequestInit {
     /** An AbortSignal to set request's signal. */
     signal?: AbortSignal | null;
     /** Can only be null. Used to disassociate request from any Window. */
-    window?: any;
+    window?: null;
 }
 
 interface ResizeObserverOptions {

baselines/serviceworker.generated.d.ts

@@ -477,7 +477,7 @@ interface RequestInit {
     /** An AbortSignal to set request's signal. */
     signal?: AbortSignal | null;
     /** Can only be null. Used to disassociate request from any Window. */
-    window?: any;
+    window?: null;
 }
 
 interface ResponseInit {

baselines/sharedworker.generated.d.ts

@@ -443,7 +443,7 @@ interface RequestInit {
     /** An AbortSignal to set request's signal. */
     signal?: AbortSignal | null;
     /** Can only be null. Used to disassociate request from any Window. */
-    window?: any;
+    window?: null;
 }
 
 interface ResponseInit {

baselines/webworker.generated.d.ts

@@ -477,7 +477,7 @@ interface RequestInit {
     /** An AbortSignal to set request's signal. */
     signal?: AbortSignal | null;
     /** Can only be null. Used to disassociate request from any Window. */
-    window?: any;
+    window?: null;
 }
 
 interface ResponseInit {

inputfiles/overridingTypes.jsonc

@@ -2986,6 +2986,15 @@
                     }
                 }
             },
+            "RequestInit": {
+                "members": {
+                    "member": {
+                        "window": {
+                            "overrideType": "null"
+                        }
+                    }
+                }
+            },
             "UnderlyingSource": {
                 "typeParameters": [
                     {