chore(CI): fix codecov reporter (#12210)

* chore(CI): update codecov/codecov-action to v3

* chore: use default test reporter

* chore: use text-summary

* chore: update coverage dir

* chore: switch to istanbul

* chore: use lcov

* chore: fix open:coverage path

packages/vant/vitest.config.ts

@@ -9,6 +9,7 @@ export default defineConfig({
   test: {
     globals: true,
     coverage: {
+      provider: 'istanbul',
       include: ['src/**/*.[jt]s?(x)'],
       exclude: [
         'src/lazyload/vue-lazyload/**',
@@ -16,7 +17,7 @@ export default defineConfig({
         '**/test/**',
         '**/lang/**',
       ],
-      reporter: ['html', 'lcov', 'text-summary'],
+      reporter: ['lcov', 'text-summary'],
       reportsDirectory: './test/coverage',
     },
     environment: 'jsdom',