@rajen, Thanks for posting in Q&A. Based on my researching, I find device restriction policy settings for iOS use Apple's restriction settings. But from the Apple's mobile device management settings site link, I don't find the setting can disable the "Learn from this App" function.
https://learn.microsoft.com/en-us/mem/intune-service/configuration/device-restrictions-ios
I notice you have open case with apple, please double confirm the setting with Apple support to see if it is available.
if there's any update, feel free to let us know.
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