test(dashboard): add fetchProjects to settings test ../../api mocks

SettingsModalNodeRouting and settings-mobile both mock ../../api but
omit fetchProjects, which the SettingsModal now calls during mount.
Add a stub returning an empty list. Drops SettingsModalNodeRouting
failures from 14 → 0 and settings-mobile from 9 → 1 (residual failure
is unrelated and tracked separately).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/dashboard/app/components/__tests__/SettingsModalNodeRouting.test.tsx

@@ -66,6 +66,7 @@ vi.mock("../../api", () => ({
   testNtfyNotification: vi.fn(),
   loginProvider: vi.fn(),
   logoutProvider: vi.fn(),
+  fetchProjects: vi.fn(() => Promise.resolve([])),
 }));
 
 vi.mock("../../hooks/useNodes", () => ({

packages/dashboard/app/components/__tests__/settings-mobile.test.tsx

@@ -41,6 +41,7 @@ const defaultSettings = {
 } as Settings;
 
 vi.mock("../../api", () => ({
+  fetchProjects: vi.fn(() => Promise.resolve([])),
   fetchSettings: vi.fn(() => Promise.resolve({ ...defaultSettings })),
   fetchSettingsByScope: vi.fn(() => Promise.resolve({ global: { ...defaultSettings }, project: {} })),
   updateSettings: vi.fn(() => Promise.resolve({ ...defaultSettings })),