chore(test): remove no-effect biome-ignore comments in event.test.ts

The noExplicitAny rule wasn't firing on these casts, so the suppressions
produced 'has no effect' warnings. Harmless but noisy; removed.

Co-authored-by: Alfonso [Magic Context] <288211368+alfonso-magic-context@users.noreply.github.com>

Author: ualtinok

packages/plugin/src/plugin/event.test.ts

@@ -21,7 +21,6 @@ describe("createEventHandler — instance dispose cleanup", () => {
         });
 
         await handler({
-            // biome-ignore lint/suspicious/noExplicitAny: minimal event shape for the test
             event: {
                 type: "server.instance.disposed",
                 properties: { directory: "/proj/a" },
@@ -40,9 +39,7 @@ describe("createEventHandler — instance dispose cleanup", () => {
             },
         });
 
-        // biome-ignore lint/suspicious/noExplicitAny: minimal event shape for the test
         await handler({ event: { type: "message.updated", properties: {} } as any });
-        // biome-ignore lint/suspicious/noExplicitAny: minimal event shape for the test
         await handler({ event: { type: "session.deleted", properties: {} } as any });
 
         expect(fired).toBe(false);
@@ -59,7 +56,6 @@ describe("createEventHandler — instance dispose cleanup", () => {
         // Must resolve, not reject.
         await expect(
             handler({
-                // biome-ignore lint/suspicious/noExplicitAny: minimal event shape for the test
                 event: {
                     type: "server.instance.disposed",
                     properties: { directory: "/proj/b" },
@@ -81,7 +77,6 @@ describe("createEventHandler — instance dispose cleanup", () => {
             },
         });
 
-        // biome-ignore lint/suspicious/noExplicitAny: minimal event shape for the test
         await handler({ event: { type: "message.updated", properties: {} } as any });
 
         expect(seen).toEqual(["au:message.updated", "mc:message.updated"]);