No way to access errors for a group defined with `withFieldGroup`

[pifantastic]

Describe the bug

When defining a group using withFieldGroup, it would be helpful to get a list of all of the errors for the group.

As an example, I have an address group. I'd like to render a list of errors at the group level (as opposed to the individual field level:

However, the group store only contains values. You can get the form-level errorMap and sort of work backwards, but that's somewhat difficult. It would be really nice if the group store had an errorMap or something similar.

Your minimal, reproducible example

https://bolt.new/~/sb1-ehaxlmcw

Steps to reproduce

Here is an example of the kind of form I mean.

Expected behavior

It should be possible to get the errors for a group.

How often does this bug happen?

None

Screenshots or Videos

No response

Platform

macOS/Chrome

TanStack Form adapter

None

TanStack Form version

1.15.1

TypeScript version

No response

Additional context

No response

[LeCarbonator]

It wasn't initially part of the PR since field groups are supposed to link fields and forms together, not store (too much) state itself.

However, I see the use cases for including it!

[dan-gamble]

Just to add to this my use case is for a field group looking like this

and I want my errors to show like the below instead of under the field and wrapping