🐛 Unhandled InvalidDIDError for unqualified did during Rotate

[ff137]

When calling /did-rotate/{conn_id}/rotate, using ?to_did= some unqualified did, we get a 200 success response, but there is an unhandled exception that arises in the agent, which goes unreported to the client:

Traceback (most recent call last):
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/core/dispatcher.py\", line 258, in handle_v1_message
    await handler(context, responder)
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/protocols/did_rotate/v1_0/handlers/rotate_handler.py\", line 32, in handle
    if record := await did_rotate_mgr.receive_rotate(connection_record, rotate):
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/protocols/did_rotate/v1_0/manager.py\", line 131, in receive_rotate
    await self._ensure_supported_did(rotate.to_did)
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/protocols/did_rotate/v1_0/manager.py\", line 242, in _ensure_supported_did
    await resolver.resolve(self.profile, did)
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/resolver/did_resolver.py\", line 87, in resolve
    _, doc = await self._resolve(profile, did, service_accept, timeout=timeout)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File \"/home/aries/.local/lib/python3.12/site-packages/acapy_agent/resolver/did_resolver.py\", line 59, in _resolve
    DID.validate(did)
  File \"/home/aries/.local/lib/python3.12/site-packages/pydid/did.py\", line 95, in validate
    return cls.model_validate(did)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File \"/home/aries/.local/lib/python3.12/site-packages/pydid/did.py\", line 89, in model_validate
    raise InvalidDIDError('\"{}\" is not a valid DID'.format(did))
pydid.did.InvalidDIDError: \"S5kDeCsZwReYzQZroSDUq8\" is not a valid DID"

This is because downstream from the RotateHandler, DID.validate gets called. But this is not validated in the DIDRotateManager before the message gets submitted to the Handler.