NocoBase v2.0.0-alpha.31: Support trigger mode of "Before data saved"

🎉 New Features

• [Workflow: Approval] Support trigger mode of “Before data saved” by @mytharcher

🐛 Bug Fixes

• [client] can’t load current form variable’s fields (#7745) by @gchust

• [Workflow: Approval] Fix locales by @mytharcher