style(channels): wrap over-long assertion line in mention composer test

Generated-By: PostHog Code
Task-Id: a2ff8500-aaa6-4ce0-b01a-656d3b2c3b61

Author: k11kirky

packages/ui/src/features/canvas/utils/mentionComposer.test.ts

@@ -97,7 +97,9 @@ describe("applyMention", () => {
     expect(result.text).toBe(
       "hey @[Raquel Smith](raquel@posthog.com) can you look",
     );
-    expect(result.caret).toBe("hey @[Raquel Smith](raquel@posthog.com) ".length);
+    expect(result.caret).toBe(
+      "hey @[Raquel Smith](raquel@posthog.com) ".length,
+    );
   });
 
   it("consumes the rest of the @word when the caret moved backward", () => {