Compiler Error on `#[derive(Bundle)]` for Generic Bundles in 0.16

## Bevy version

Bevy 0.16

## What you did

This is a follow up to [this discussion](https://github.com/bevyengine/bevy/discussions/19460).

The following code no longer compiles as of Bevy 0.16:

```rust
use bevy::prelude::*;

#[derive(Bundle)]
struct Foo(T);
```
```
error[E0277]: the trait bound `T: BundleFromComponents` is not satisfied
```
I understand this requires `BundleFromComponent` trait bound to work because of the new changes to Bundles:
```rust
use bevy::prelude::*;
use bevy::ecs::bundle::BundleFromComponents;

#[derive(Bundle)]
struct Foo(T);
```

However, as discussed, this feels like a regression since `BundleFromComponents` is mostly an implementation detail (to me, at least).

## Additional information

Some solutions that come to my mind:

- We could have `Bundle` require `BundleFromComponents` as a trait bound. But this makes me wonder why this trait was split out to begin with.
- We could introduce a new `CompleteBundle` trait (naming is hard) which does require `BundleFromComponent` and change `derive(Bundle)` to `derive(CompleteBundle)` instead.

Start by reproducing the generic `#[derive(Bundle)]` example on Bevy 0.16 and read discussion #19460 for the context around `BundleFromComponents`. Investigate the `Bundle`, `BundleFromComponents`, and derive behavior described in the issue; done means the generic bundle API has an agreed resolution that no longer exposes an unintended implementation detail.

Written by the indexing model from the issue text.