Open Release Evidence JSON in a new tab instead of downloading

What does this MR do and why?

Related to Allow JSON evidence collection files to open up... (#378930 - closed)

Screenshots or screen recordings

How to set up and validate locally

1. Click the link for a Release Evidence JSON file
2. Observe that it opens in a new tab

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.