fix: default value for __VUE_OPTIONS_API__

ref: vitejs/vite-plugin-vue@acb57c9

Author: sxzz

src/core/index.ts

@@ -248,18 +248,18 @@ export const plugin = createUnplugin<Options | undefined, false>(
               dedupe: config.build?.ssr ? [] : ['vue'],
             },
             define: {
-              __VUE_OPTIONS_API__:
-                (options.value.features.optionsAPI ||
-                  config.define?.__VUE_OPTIONS_API__) ??
-                true,
-              __VUE_PROD_DEVTOOLS__:
-                (options.value.features.prodDevtools ||
-                  config.define?.__VUE_PROD_DEVTOOLS__) ??
-                false,
-              __VUE_PROD_HYDRATION_MISMATCH_DETAILS__:
-                (options.value.features.prodHydrationMismatchDetails ||
-                  config.define?.__VUE_PROD_HYDRATION_MISMATCH_DETAILS__) ??
-                false,
+              __VUE_OPTIONS_API__: !!(
+                (options.value.features?.optionsAPI ?? true) ||
+                config.define?.__VUE_OPTIONS_API__
+              ),
+              __VUE_PROD_DEVTOOLS__: !!(
+                options.value.features?.prodDevtools ||
+                config.define?.__VUE_PROD_DEVTOOLS__
+              ),
+              __VUE_PROD_HYDRATION_MISMATCH_DETAILS__: !!(
+                options.value.features?.prodHydrationMismatchDetails ||
+                config.define?.__VUE_PROD_HYDRATION_MISMATCH_DETAILS__
+              ),
             },
             ssr: {
               // @ts-ignore -- config.legacy.buildSsrCjsExternalHeuristics will be removed in Vite 5