Add former name to COD filing when user changes legal name

**Context:**
This is an enhancement created in response to feedback from the help desk. The feedback was that many users are using the change legal name option to assign a totally different person as director.

The desire is to show the former name of the director when the user is filing a COD and has changed the legal name. We have already implemented the main part of the solution in Ticket #28814 which is to require the user to check a box to confirm they are not changing the person, just the name. We held off on implementing this second part because we were waiting for feedback from Elizabeth and Megan

**To Do:**
- Display the previous name (whatever the most recent name was)
- The former name only displays during this session of the filing. Once the user submits the filing, the former name does not display if they enter the COD filing again.
- Do NOT display the former name on the NOA that is generated after filing the COD

**Design Ticket #29650**