Fixes https://github.com/payloadcms/payload/issues/11568
### What? Out of sync errors states
- Collaspibles & Tabs were not reporting accurate child error counts
- Arrays could get into a state where they would not update their error
states
- Slight issue with toasts
### Tabs & Collapsibles
The logic for determining matching field paths was not functioning as
intended. Fields were attempting to match with paths such as `_index-0`
which will not work.
### Arrays
The form state was not updating when the server sent back errorPaths.
This PR adds `errorPaths` to `serverPropsToAccept`.
### Toasts
Some toasts could report errors in the form of `my > > error`. This
ensures they will be `my > error`
### Misc
Removes 2 files that were not in use:
- `getFieldStateFromPaths.ts`
- `getNestedFieldState.ts`
48115311e7
