Add empty camelRoute using the code editor - replaced with []

[tplevko]

Describe the Bug

When the user adds empty camel route using the code editor - it gets replaced with empty square brackets - '[]'

Steps to Reproduce the Bug or Issue

1. add following camel route to the editor:

• route:
  from:
  uri: null
  steps: []

2. sync code changes
3. see the string above replaced with []

Screenshots or Videos

Platform

• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Version: [latest]

[igarashitm]

See #2090 (comment)