Update Choose Event Menu to Standard Select Control

**Is your feature request related to a problem? Please describe.**
The Choose Event control on the Analysis page is a non-standard select control.

**Describe the solution you'd like**
Convert the Choose Event control on the Analysis page to a standard HTML Select control like what is used on the setup page.

**Additional context**
Refer to the setup page for similar code to create a standard HTML select control.

Start by locating the Choose Event control on the Analysis page, then inspect the corresponding standard select control on the setup page for a pattern to follow. Replace the Analysis page control with the same kind of HTML select and verify that event selection still works as expected.

Written by the indexing model from the issue text.