Remove bevy_utils::default() and prefer <_>::default()

[BenjaminBrienen]

Objective

Contributes to #11478

Solution

This has been attempted in a different manner before, but I want to see how this version is liked since it uses a more brief syntax than the previous attempt. I'm also interested to see if minds have changed in the last couple months. Close if unwanted.

Testing

CI

Migration Guide

bevy_utils::prelude and bevy_utils::default are removed. Use <_>::default() instead.

[MrGVSV]

I'm pretty sure Cart added default to reduce the noise in Bevy code, especially in bundles. This PR seems to add more noise (and subjectively more than just using Default::default). It also means more typing since you can't just import default once, but now need to add <_>:: to every call site