Fullstack template has wrong default platform

[ochrons]

https://github.com/DioxusLabs/dioxus-template/blob/main/Fullstack/Dioxus.toml

It's currently web but it should be

default_platform = "fullstack"

[ochrons]

Not creating a new issue, but if tailwind is enabled, the styles are reset to nothing, making the app look horrible. The main.rs should also be updated to reflect the use of tailwind.css