* fix(plugin-workflow-manual): fix migration
* fix(plugin-workflow-manual): fix constraints key name
* test(plugin-workflow-manual): add test case and fix
* fix(plugin-workflow-manual): add migration to delete m2m fields
* fix(plugin-workflow-manual): fix esists check
* fix(plugin-workflow-manual): fix drop primary key in mysql
* fix(plugin-workflow-manual): ignore sqlite
* test(plugin-workflow-manual): check mysql
* test(plugin-workflow-manual): use isolate level on transaction
* test(plugin-workflow-manual): use described columns to check