nameChangeDate is always today

**Describe the bug**
When calling the most_actives screener, the nameChangeDate field is always returning the current day of the call. This isn't really useful if you're trying to actually figure out when the name change occured.

**To Reproduce**
Steps to reproduce the behavior:
s = Screener()
s.get_screeners('most_actives', 10)

**Expected behavior**
prevName has expected output
nameChangeDate should have the date the name changed, not today's date

**Screenshots**

**Desktop (please complete the following information):**
- OS: ubuntu server 24
- Command Line Interface

**Additional context**
Add any other context about the problem here.

Start at the Screener.get_screeners('most_actives', 10) entry point and reproduce the reported result. Trace how prevName and nameChangeDate are obtained, then verify that nameChangeDate reflects the actual name-change date rather than the call date; add or update coverage for this behavior if the project has a relevant test location.

Written by the indexing model from the issue text.