Add tooltips to fun picker

ts/components/fun/base/FunTooltip.tsx

@@ -0,0 +1,19 @@
+// Copyright 2025 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React, { type ReactNode } from 'react';
+import type { Placement } from 'react-aria';
+import { Tooltip } from 'react-aria-components';
+
+export type FunTooltipProps = Readonly<{
+  placement?: Placement;
+  children: ReactNode;
+}>;
+
+export function FunTooltip(props: FunTooltipProps): JSX.Element {
+  return (
+    <Tooltip className="FunTooltip" placement={props.placement}>
+      {props.children}
+    </Tooltip>
+  );
+}