ffi: expose method to allow user account deactivate for m.login.password based accounts

[stefanceriu]

Expose the Account method but restrict it to the types we were already using for user interactive authorization on the identity reset flows.

[Hywan]

Looks good, although I would prefer to have a test with the erase_data, it seems pretty important to test :-].

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.30%. Comparing base (aa92e26) to head (3e242ce).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4002      +/-   ##
==========================================
+ Coverage   84.27%   84.30%   +0.02%     
==========================================
  Files         266      266              
  Lines       28315    28315              
==========================================
+ Hits        23863    23870       +7     
+ Misses       4452     4445       -7     

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[Hywan]

I believe we are good now :-]. Thanks for the test!