test(coach): point the disable-coach invariant at the relocated Coach section

The per-user disableCoach gate moved out of the AI/Assistent settings section
into its own dedicated Coach section in v1.18.0. Update the call-site allowlist
so the grep-based invariant pins the new home instead of the old one.

src/lib/feature-flags/__tests__/coach-user-disable.test.tsx

@@ -307,10 +307,12 @@ describe("Coach per-user disableCoach invariant", () => {
     //   writes the flag does NOT read `user.disableCoach` (it reads
     //   `body.disableCoach`) and is intentionally not listed here.
     "src/app/api/auth/me/route.ts",
-    // - Settings → KI section: the toggle card reads + writes the
+    // - Settings → Coach section: the toggle card reads + writes the
     //   flag; the section shell reads it to gate the Coach sub-cards.
+    //   v1.18.0 — moved out of the AI/Assistent section into its own
+    //   dedicated Coach settings entry.
     "src/components/settings/ai/disable-coach-card.tsx",
-    "src/components/settings/ai-section.tsx",
+    "src/components/settings/coach-section.tsx",
     // v1.7.0 W6 — the unified dashboard snapshot builder reads
     // `user.disableCoach` to gate the embedded daily briefing to
     // `briefingState: "disabled"`. Covered by the briefingState matrix