Don't check synth anchors during CheckTx [#3321]
Closes #3321 (closed). Move validation of synthetic message proof anchors from CheckTx to DeliverTx to mitigate DN anchor timing issues.
Changelog: fix
Closes #3321 (closed). Move validation of synthetic message proof anchors from CheckTx to DeliverTx to mitigate DN anchor timing issues.
Changelog: fix