If there is a SA flow error, display it in the test output
Allow assert_current_node to detect for an error instead
Tidy up logic for if an error should be asserted or not
Update error assertions in Student Finance calc
Update error assertions for Student Finance V2 calc
Update error assertions in PIP Checker
Update error assertions in Legalisation Document Checker
Update error assertions on child benefit calculator
Update holiday entitlement error assertions
Update error assertions in stat sick pay calc
Update error assertion in night work tests
Update error assertions of state pension calc
Merge branch 'master' into stop-swallowing-errors
Update error assertion in child maintenance
update error assertion in sick pay v2
Merge remote-tracking branch 'origin/stop-swallowing-errors'