startProviderEditWizardForTest method
Test seam driving the TUI picker's Edit action in line mode: opens
the prefilled edit wizard for entry (or the active provider when
null), the same _startProviderEditWizard the picker calls.
Implementation
@visibleForTesting
void startProviderEditWizardForTest(CustomProviderEntry? entry) =>
_startProviderEditWizard(entry);