Export canonical CSV - give different filename

In an analysis, go to settings, assign canonical transcripts to something.

Now analysis nodes should have an additional download link that exports variants using those transcript versions

When downloading this, some people have accidentally clicked it, and been confused as to why their HGVS changed to use the canonical transcripts.

Feature Request:

* Change the filename when downloading this file to include canonical transcript name, so it's obviously different than the default