Fix : Resolves #1244

[Yash2004Codes]

Problem : See issue #1244 for details.
Fix: Added toast message when functionality fails for better user experience.
Before fix : studio without ant toast messages
After fix scenario:

1. when "save as JSON" functionality fails then this:

2) when "conversion to JSON" fails

3. when "import from base64" fails,

4) when "convert and save as YAML" fails , 5) when "convert to YAML" fails 7) when "import from UUID" fails

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[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

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