fix(nuxt): mark compatibility for nuxt v4 stable (#3009)

* fix(nuxt): mark compatibility for nuxt v4 stable

* chore: simplify compatibility

Author: GalacticHypernova

packages/nuxt/src/module.ts

@@ -27,7 +27,7 @@ const module: NuxtModule<ModuleOptions> = defineNuxtModule<ModuleOptions>({
     name: 'pinia',
     configKey: 'pinia',
     compatibility: {
-      nuxt: '^3.15.0 || ^4.0.0-0',
+      nuxt: '^3.15.0 || ^4.0.0',
     },
   },
   defaults: {},