[3 / 5] Move crypto checks in the approval-distribution (#4928)

# Prerequisite 
This is part of the work to further optimize the approval subsystems, if
you want to understand the full context start with reading
https://github.com/paritytech/polkadot-sdk/pull/4849#issue-2364261568,

# Description
This PR contain changes, so that the crypto checks are performed by the
approval-distribution subsystem instead of the approval-voting one. The
benefit for these, is twofold:
1. Approval-distribution won't have to wait every single time for the
approval-voting to finish its job, so the work gets to be pipelined
between approval-distribution and approval-voting.

2. By running in parallel multiple instances of approval-distribution as
described here
https://github.com/paritytech/polkadot-sdk/pull/4849#issue-2364261568,
this significant body of work gets to run in parallel.

## Changes:
1. When approval-voting send `ApprovalDistributionMessage::NewBlocks` it
needs to pass the core_index and candidate_hash of the candidates.
2. ApprovalDistribution needs to use `RuntimeInfo` to be able to fetch
the SessionInfo from the runtime.
3. Move `approval-voting` logic that checks VRF assignment into
`approval-distribution`
4. Move `approval-voting` logic that checks vote is correctly signed
into `approval-distribution`
5. Plumb `approval-distribution` and `approval-voting` tests to support
the new logic.

## Benefits
Even without parallelisation the gains are significant, for example on
my machine if we run approval subsystem bench for 500 validators and 100
cores and trigger all 89 tranches of assignments and approvals, the
system won't fall behind anymore because of late processing of messages.
```
Before change
Chain selection approved  after 11500 ms hash=0x0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a

After change

Chain selection approved  after 5500 ms hash=0x0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a
```

## TODO:
- [x] Run on versi.
- [x] Update parachain host documentation.

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Signed-off-by: Alexandru Gheorghe <[email protected]>