chore: include sigit relay explicitly when fetching event from user relays

src/contexts/NDKContext.tsx

@@ -150,6 +150,10 @@ export const NDKContextProvider = ({ children }: { children: ReactNode }) => {
         return [] as string[]
       })
 
+    if (!relayUrls.includes(SIGIT_RELAY)) {
+      relayUrls.push(SIGIT_RELAY)
+    }
+
     return ndk
       .fetchEvents(
         filter,