fix(nuxt): allow load default spa loading indicator

[davidglezz]

Environment

• Operating System: Darwin
• Node Version: v20.1.0
• Nuxt Version: 3.7.0
• CLI Version: 3.7.3
• Nitro Version: 2.6.2
• Package Manager: npm@9.6.4
• Builder: -
• User Config: ssr, build, modules, app, css, vite, runtimeConfig
• Runtime Modules: @vueuse/nuxt@10.4.1
• Build Modules: -

Reproduction

add ~/app/spa-loading-template.html

https://stackblitz.com/edit/github-6nhkcv

Describe the bug

Loading spaLoadingTemplate by default from ~/app/spa-loading-template.html no longer works as documented.

Implemented in #21640

• Default value: null, then ~/app/spa-loading-template.html was loaded.

Changed default value to false in #22798

• false if undefined or null, then ~/app/spa-loading-template.html is never loaded.

Additional context

Since last version, spaLoadingTemplate: true only loads nuxt animation and does not load ~/app/spa-loading-template.html if exist.

Logs

No response

[stackblitz]

Start a new pull request in StackBlitz Codeflow.

• github-6nhkcv (Open reproduction)