Keria crashes when creating singlesig delegate identifier

This looks like a regression from latest keripy & keria changes

There's a signify-ts integration test to reproduce the issue in this PR https://github.com/WebOfTrust/signify-ts/pull/157

Keria stacktrace

Traceback (most recent call last):
  File "/home/uroot/.local/bin/keria", line 33, in <module>
    sys.exit(load_entry_point('keria', 'console_scripts', 'keria')())
  File "/home/uroot/keria/src/keria/app/cli/keria.py", line 31, in main
    raise ex
  File "/home/uroot/keria/src/keria/app/cli/keria.py", line 25, in main
    doers = args.handler(args)
  File "/home/uroot/keria/src/keria/app/cli/commands/start.py", line 20, in <lambda>
    parser.set_defaults(handler=lambda args: launch(args))
  File "/home/uroot/keria/src/keria/app/cli/commands/start.py", line 84, in launch
    runAgent(name=args.name,
  File "/home/uroot/keria/src/keria/app/cli/commands/start.py", line 117, in runAgent
    directing.runController(doers=doers, expire=expire)
  File "/home/uroot/keripy/src/keri/app/directing.py", line 665, in runController
    doist.do(doers=doers)
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 156, in do
    self.recur()  # increments .tyme runs recur context
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 275, in recur
    tock = dog.send(self.tyme)  # yielded tock == 0.0 means re-run asap
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 922, in do
    self.done = self.recur(tyme=tyme)  # equv of doist.recur
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 1026, in recur
    tock = dog.send(tyme)  # yielded tock == 0.0 means re-run asap
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 922, in do
    self.done = self.recur(tyme=tyme)  # equv of doist.recur
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 1026, in recur
    tock = dog.send(tyme)  # yielded tock == 0.0 means re-run asap
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 922, in do
    self.done = self.recur(tyme=tyme)  # equv of doist.recur
  File "/home/uroot/.local/lib/python3.10/site-packages/hio/base/doing.py", line 1026, in recur
    tock = dog.send(tyme)  # yielded tock == 0.0 means re-run asap
  File "/home/uroot/keripy/src/keri/app/delegating.py", line 138, in escrowDo
    self.processEscrows()
  File "/home/uroot/keripy/src/keri/app/delegating.py", line 143, in processEscrows
    self.processPartialWitnessEscrow()
  File "/home/uroot/keripy/src/keri/app/delegating.py", line 193, in processPartialWitnessEscrow
    self.hby.db.cdel.put(keys=(pre, seqner.qb64), val=serder.saider)
AttributeError: 'SerderKERI' object has no attribute 'saider'. Did you mean: 'said'?

WebOfTrust / keria

Keria crashes when creating singlesig delegate identifier #140