Show dialog for permanently undownloadable attachments

ts/state/smart/AttachmentNotAvailableModal.tsx

@@ -0,0 +1,38 @@
+// Copyright 2025 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React, { memo, useCallback } from 'react';
+import { useSelector } from 'react-redux';
+import { AttachmentNotAvailableModal } from '../../components/AttachmentNotAvailableModal';
+import { strictAssert } from '../../util/assert';
+import { getAttachmentNotAvailableModalType } from '../selectors/globalModals';
+import { getIntl } from '../selectors/user';
+import { useGlobalModalActions } from '../ducks/globalModals';
+
+export const SmartAttachmentNotAvailableModal = memo(
+  function SmartAttachmentNotAvailableModal() {
+    const i18n = useSelector(getIntl);
+    const attachmentNotAvailableModalType = useSelector(
+      getAttachmentNotAvailableModalType
+    );
+
+    strictAssert(
+      attachmentNotAvailableModalType != null,
+      'attachmentNotAvailableModalType is required'
+    );
+
+    const { hideAttachmentNotAvailableModal } = useGlobalModalActions();
+
+    const handleClose = useCallback(() => {
+      hideAttachmentNotAvailableModal();
+    }, [hideAttachmentNotAvailableModal]);
+
+    return (
+      <AttachmentNotAvailableModal
+        i18n={i18n}
+        modalType={attachmentNotAvailableModalType}
+        onClose={handleClose}
+      />
+    );
+  }
+);