fix: Add promise cancellation check to ActionDetail.tsx

Prevent state updates on unmounted components in handleRemoveFromJail.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/src/components/config/ActionDetail.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useState } from "react";
+import { useCallback, useEffect, useRef, useState } from "react";
 import { Button, Field, Input, MessageBar, MessageBarBody } from "@fluentui/react-components";
 import { Delete24Regular, LinkEdit24Regular } from "@fluentui/react-icons";
 import type { ActionConfig } from "../../types/config";
@@ -18,22 +18,35 @@ export function ActionDetail({ action, onAssignClick, onRemovedFromJail }: Actio
   const [removingJail, setRemovingJail] = useState<string | null>(null);
   const [removeError, setRemoveError] = useState<string | null>(null);
   const { fetchRawContent, saveRawContent } = useActionRawFile(action.name);
+  const removeControllerRef = useRef<AbortController | null>(null);
 
   const handleRemoveFromJail = useCallback(
     (jailName: string): void => {
+      removeControllerRef.current?.abort();
+      const controller = new AbortController();
+      removeControllerRef.current = controller;
+
       setRemovingJail(jailName);
       setRemoveError(null);
       onRemovedFromJail(jailName)
         .catch((err: unknown) => {
+          if (controller.signal.aborted) return;
           setRemoveError(err instanceof Error ? err.message : "Failed to remove action from jail.");
         })
         .finally(() => {
+          if (controller.signal.aborted) return;
           setRemovingJail(null);
         });
     },
     [onRemovedFromJail],
   );
 
+  useEffect(() => {
+    return (): void => {
+      removeControllerRef.current?.abort();
+    };
+  }, []);
+
   return (
     <div>
       <div className={styles.fieldRow} style={{ marginBottom: "var(--spacingVerticalS)" }}>