### What problem does this PR solve?
Feat: Downstream operators can get the variables defined by the user
input operator #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Adjust agent mcp style #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Allow users to enter text in the middle of a chat #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Add UserFillUpForm component #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
