RI-6919: Enhance JSON input for RDI Dry run

[pawelangelow]

In order to test it:

• add an RDI instance
• create new job with random name
• go to that job
• on the bottom right corner you'll see a button "Dry run"

Preview

Before	After

[github-actions]

Code Coverage - Frontend unit tests

St.❔	Category	Percentage	Covered / Total
🟢	Statements	82.2%	20057/24400
🟡	Branches	67.56%	8684/12853
🟡	Functions	76.34%	5339/6994
🟢	Lines	82.62%	19635/23766

Test suite run success

5163 tests passing in 677 suites.

Report generated by 🧪jest coverage report action from a05c95c