Unittests for create_event_view_model.dart

[palisadoes]

We will need unittests done for all methods, classes and functions found in this file.

Any widgets referenced in this file must also have unittests done

after_auth_view_models/event_view_models/create_event_view_model.dart

This file can be found in the lib/view_model directory

Parent Issue:

• Complete Code Coverage for After-Auth Event and Profile View Models #1023

PR Acceptance Criteria

• When complete this file must show 100% coverage when merged into the code base.
• The current code coverage for the file can be found here
• The PR will show a report for the code coverage for the file you have added. You can use that as a guide

[ahluwaliatikant]

@palisadoes Please assign this issue to me.

[palisadoes]

• This isn't complete the file shows only 31% code coverage instead of 100%
• Reopening