feat: fix null pointer handling in log modals

frontend/src/pages/Editor.tsx

@@ -309,6 +309,7 @@ export default function Editor() {
           onClose={() =>
             setDecryptionStatus({ status: "RESET", message: "", log: "" })
           }
+          isOpen={decryptionStatus.status !== "RESET"}
         />
 
         {isInitialLoading && (

frontend/src/pages/Reader.tsx

@@ -183,8 +183,8 @@ export default function Reader() {
       <LogModal
         isOpen={!!warning}
         onClose={() => setWarning(null)}
-        message={warning?.message}
-        log={warning?.log}
+        message={warning?.message || ""}
+        log={warning?.log || ""}
         status="WARN"
       />