* refactor(plugin-workflow): add sync option for trigger
* feat(plugin-workflow-request): support sync call in request
* fix(plugin-workflow-request): fix request async call
* refactor(plugin-workflow): add method to check if workflow is sync
* fix(plugin-workflow): fix useAvailable in nodes
* fix(plugin-workflow): fix node.isAvailable check
* test(plugin-workflow): limit mysql version to pass test
* fix(plugin-workflow-delay): fix test case
* fix(plugin-workflow-delay): fix test case
* feat(plugin-workflow): add sync field for workflow
* refactor(plugin-workflow): adjust end node logic
* fix(plugin-workflow): support sync mode in form trigger
* feat(plugin-workflow): add end instruction
* fix(plugin-workflow-form-trigger): fix test cases
* fix(plugin-workflow): fix transaction for sync event
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