### What problem does this PR solve?
Feat: Enables the message operator form to reference the data defined by
the begin operator #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Convert the inputs parameter of the begin operator #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Solved the problem that BeginForm would get stuck when modifying
data #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Use one-way data flow to synchronize the form data to the canvas
#3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
