feat(tests): make Expected Detection editable when creating a test from template

Leads can now edit Expected Detection in the create-from-template
form, same as Suggested Attack Procedure — the edit seeds the new
test's detect_procedure via a detect_procedure_override, without
touching the template itself. The template only updates later through
the existing procedure-suggestion approval flow, once a round is
actually submitted — same mechanism as the red side, no new bypass.

frontend/src/api/tests.ts

@@ -144,6 +144,7 @@ export async function createTestFromTemplate(
     platform?: string;
     procedure_text?: string;
     tool_used?: string;
+    detect_procedure?: string;
   },
 ): Promise<Test> {
   const { data } = await client.post<Test>("/tests/from-template", {