修复小程序讲解内部返回控件

tests/unit/ExhibitDetailAudioFirst.spec.ts

@@ -403,6 +403,7 @@ describe('讲解详情音频优先布局', () => {
       hallId: 'hall-1',
       hallName: '恐龙厅'
     })
+    expect(wrapper.find('.hero-back').exists()).toBe(false)
     wrapper.getComponent(GuidePageFrameStub).vm.$emit('back')
     await flushPromises()
 
@@ -427,7 +428,8 @@ describe('讲解详情音频优先布局', () => {
       returnToGuideStopList: '1',
       returnToHallList: '1'
     })
-    wrapper.getComponent(GuidePageFrameStub).vm.$emit('back')
+    expect(wrapper.find('.hero-back').exists()).toBe(true)
+    await wrapper.get('.hero-back').trigger('tap')
     await flushPromises()
 
     const url = vi.mocked(uni.redirectTo).mock.calls[0]?.[0]?.url || ''