Fix actions/download-artifact v4

[Thenlie]

What does this PR do?

Improve repo

Description

Bug 1

This issue originally came up when a PR was failing the check-url action at the download artifact step. At the time, downgrading download-artifact to v3 resolved the issue. Since that version is now being deprecated, a new solution is needed.

After some investigation, I have found that the download only fails when a file is named README.md specifically. While I don't understand the root cause behind this issue (I am 99% sure it is in the upstream repo), we can get around it by simply renaming README.md before uploading it. This does not change the file name in the repo, just the artifact.

Bug 2

As I was working on this, I found another issue that was due to a problem with our action. If someone update two files with the same name (ex. README.md and docs/README.md) the upload step fails because the file names are identical. Previously we would strip the path from the file name so both of the example files would be uploaded as README.md. I have updated the upload step to use the entire path of the file to avoid this problem. Now the example files would be uploaded as README.md and docs-README.md respectively.

Checklist:

• Read our contributing guidelines.
• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

Closes #11749