[BUG] Code with expression object is lost in JSON > YAML

[igarashitm]

Describe the bug
The source code is lost with expression object

To Reproduce
Steps to reproduce the behavior:

1. Open source code editor
2. Paste following YAML

- from:
    uri: timer:null
    steps:
    - set-body:
        expression:
          simple:
            expression: test

4. Click sync your code
5. See error

Expected behavior
Source code shows and the canvas updates

Logs

2023-03-20_12-05-40.mp4

Environment (please complete the following information):

• OS: [e.g. "Linux 5.10.0-9-amd64 Using sonarcloud action to add details on PR #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux"]
• Output of the mvn -version` command
• Kaoto Version [e.g. 1.0]

Additional context
Add any other context about the problem here.

[igarashitm]

Reopening, try-catch is still missing