fix create experiment from ui created prompt

[kavinvalli]

No description provided.

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[promptless]

📝 Documentation updates detected! You can review documentation updates here

[fumedev]

Summary

• Fixes the creation of experiment prompts from the UI by ensuring prompt input keys are created correctly.
• Adds error handling for the prompt input keys creation process.
• Updates regex in the findKeys helper function to correctly match and process input keys with optional escape characters.
• Ensures that any backslashes in key strings are removed during processing.