Add Full List of Timezones to Selection when Building Assessment

[nickviola]

💡 Summary

Add a "Select More" option to the current selection list that displays the full list of timezones for selection.

Motivation and context

Allows more Timezone options for setting up assessments.

Implementation notes

• In the timezone selection prompt menu, add a "Select More" option.
• The "Select more" option should then display the full list of timezones for selection.
• Proceed with setup as normal.

Acceptance criteria

• Timezone selection screen has a "Select More" option
• The "Select More" option displays the full list of Timezones for selection.
• The assessment builder process proceeds successfully as normal.