fix(orm): clone QueryInfo objects in () to prevent mutation

- Change from [...this.slowQueries] to this.slowQueries.map((query) => ({ ...query }))
- Prevents callers from mutating the shared slowQueries buffer
- Ensures each QueryInfo object is properly shallow-copied

Co-authored-by: Yiming Cao <ymc9@users.noreply.github.com>

Author: claude[bot]

packages/orm/src/client/client-impl.ts

@@ -433,7 +433,7 @@ export class ClientImpl {
     async $diagnostics(): Promise<Diagnostics> {
         return {
             zodCache: this.inputValidator.zodFactory.cacheStats,
-            slowQueries: [...this.slowQueries],
+            slowQueries: this.slowQueries.map((query) => ({ ...query })),
         };
     }