Read only mode use case in catalog app.

[santosh-pingle]

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Fixes #2804

Description
Add read only mode use case to the catalog app.

Alternative(s) considered
Have you considered any alternatives? And if so, why have you chosen the approach in this PR?

Type
Choose one: Feature

Screenshots (if applicable)

Checklist

• I have read and acknowledged the Code of conduct.
• I have read the Contributing page.
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• I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
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[santosh-pingle]

Screen.Recording.2025-03-12.at.3.19.01.PM.mov

[jingtang10]

can you please explore using a lambda to encapsulate these configurations? i think we might have more complex setups for different modes in the future and it's not ideal to have to change the demo questionnaire fragment class each time.