Show a confirmation dialog when DataMapper step is to be deleted, with also offering an option to delete associated mapping file (XSLT)

[igarashitm]

Describe the Bug

Currently the DataMapper step is deleted without confirmation dialog. Show a confirmation dialog, but offer 3 options:

1. Delete DataMapper step and associated mapping file (XSLT)
2. Delete DataMapper step, but keep the associated mapping file
3. Cancel

cf. KaotoIO/kaoto-datamapper-integration#94

Need an enhancement to the confirmation modal provider, better to do in upstream first and port here.
#1537

Update

One more thing to consider. We should change the behvior of onDelete callback depending on the answer from confirmation dialog above, i.e. if mapping file is to be removed or not. We need a way to propagate that decision to onDelete.

Steps to Reproduce the Bug or Issue

No response

Screenshots or Videos

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Platform

• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Version: [e.g. 0.30.0]