Revert persistent menu auto select bug fix and related tests

[minhaminha]

Technical Summary

Jira Ticket
Reverting to fix an issue with instance('selected_cases') leading to too many cases being selected.

Reverting Persistent menu auto select fix and parts of Ensure Unique Menu Entries in Persistent Menu (only changes concerning tests)

Safety Assurance

Safety story

Tested on staging and confirmed with Delivery.

Special deploy instructions

• This PR can be deployed after merge with no further considerations.

Rollback instructions

• This PR can be reverted after deploy with no further considerations.

Review

• The set of people pinged as reviewers is appropriate for the level of risk of the change.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.21%. Comparing base (9db10a8) to head (6663cb0).
Report is 2 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1642      +/-   ##
============================================
+ Coverage     70.17%   70.21%   +0.03%     
  Complexity     2005     2005              
============================================
  Files           254      254              
  Lines          7902     7902              
  Branches        745      744       -1     
============================================
+ Hits           5545     5548       +3     
+ Misses         2076     2070       -6     
- Partials        281      284       +3     

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