Fix attribute sorting in user profiles

[PasinduYeshan]

This PR fixes an issue where attributes without a defined displayOrder were appearing at the beginning of the user profile. With this update, any attribute missing a displayOrder will now be shown at the end of the profile.

Eg: sharedType doesn't have a displayOrder.

With this change if schema doesn't have order Id it will be shown at the end of the user profile

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.85%. Comparing base (97b2bd8) to head (64b957d).
Report is 20 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7636   +/-   ##
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  Coverage   41.85%   41.85%           
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  Files          42       42           
  Lines         939      939           
  Branches      238      238           
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  Hits          393      393           
  Misses        546      546           

Flag	Coverage Δ
@wso2is/core	41.85% <ø> (ø)

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