Failing client tests: Invalid version

[matthiasgeihs]

Location

Probably client/failing_funding_test.go.
See CI output for more information: https://github.com/hyperledger-labs/go-perun/runs/7039931517?check_suite_focus=true

Problem

In rare cases, the watcher reports:
ERRO[0005] Error registering dispute: invalid version: expected >=1, got 0.

The problem seems to be that the watcher in multi-ledger mode sometimes still has an old state which it tries to register.

Proposal

Need to investigate further.