chore: Align code/src/vs/base/common/network.ts with upstream

Signed-off-by: Roman Nikitenko <rnikiten@redhat.com>

Author: RomanNikitenko

code/src/vs/base/common/network.ts

@@ -354,7 +354,11 @@ class FileAccessImpl {
 export const FileAccess = new FileAccessImpl();
 
 export const CacheControlheaders: Record<string, string> = Object.freeze({
-	'Cache-Control': 'no-cache, no-store',
+	'Cache-Control': 'no-cache, no-store'
+});
+
+export const DocumentPolicyheaders: Record<string, string> = Object.freeze({
+	'Document-Policy': 'include-js-call-stacks-in-crash-reports'
 });
 
 export namespace COI {