fix: use strict equality in webhook delete handler role check (calcom#28958)

Replaced `==` with `===` for the ADMIN role comparison to follow
TypeScript best practices and match the project's coding conventions.

Co-authored-by: Test User <test@example.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: 3 people

packages/trpc/server/routers/viewer/webhook/delete.handler.ts

@@ -20,7 +20,7 @@ export const deleteHandler = async ({ ctx, input }: DeleteOptions) => {
   if (Array.isArray(where.AND)) {
     if (input.eventTypeId) {
       where.AND.push({ eventTypeId: input.eventTypeId });
-    } else if (ctx.user.role == "ADMIN") {
+    } else if (ctx.user.role === "ADMIN") {
       where.AND.push({ OR: [{ platform: true }, { userId: ctx.user.id }] });
     } else {
       where.AND.push({ userId: ctx.user.id });