chore: update ESLint config to ignore coverage directory and fix type in test

eslint.config.ts

@@ -17,7 +17,7 @@ export default defineConfigWithVueTs(
     name: "app/files-to-lint",
     files: ["**/*.{ts,mts,tsx,vue}"],
   },
-  { ignores: ["**/dist/**"] },
+  { ignores: ["**/dist/**", "**/coverage/**"] },
   pluginVue.configs["flat/essential"],
   vueTsConfigs.recommended,
   skipFormatting,

tests/echarts.test.ts

@@ -854,7 +854,7 @@ describe("ECharts component", () => {
     const exposed = shallowRef<any>();
 
     renderChart(
-      () => ({ option: option.value, onClick: undefined as unknown as () => {} }),
+      () => ({ option: option.value, onClick: undefined as any }),
       exposed,
     );
     await nextTick();