[Task] Prevent users from changing their profile based on HS capabilities

[jmartinesp]

Please see and discuss the details in the meta issue (element-hq/element-meta#3167).

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Depends on matrix-org/matrix-rust-sdk#6371. The implementation in the clients should just make sure we disable the UI that would allow the users to change their profile (display name, avatar) based on the HS capabilities.