Fix legacy 3.1.0 www paths

[forsyth2]

Summary

Objectives:

• Fix the www path for the legacy-3.1.0 tests to avoid over-writing of results from the non-legacy tests.

Issue resolution:

• Resolves issue noted in 3/25 main branch test

Select one: This pull request is...

• a bug fix: increment the patch version
• a small improvement: increment the minor version
• a new feature: increment the minor version
• an incompatible (non-backwards compatible) API change: increment the major version

Small Change

• To merge, I will use "Squash and merge". That is, this change should be a single commit.
• Logic: I have visually inspected the entire pull request myself.
• Pre-commit checks: All the pre-commits checks have passed.

[forsyth2]

This was tested as part of the 3/27 main branch test, so I think it should be good to merge.

However, I expect the auto-generated files will have merge conflicts with #788, so I'm going to merge that first and then address any such conflicts here. (#800, if/when we get to it, would remove any need to worry about conflicts in the auto-generated files).

[forsyth2]

I merged #788 and rebased this branch off the latest main. By visual inspection, the relevant code changes of the previous commit (which was tested in the 3/27 main branch test) are still in place. I will merge this now.