Nvm workaround

[matthewhilton]

• Closes NodeJS install failure #121 - see this issue for the context
• Closes Reference other workflows via paths, not branch / git links. #123 (as a necessity to get this to test properly on a branch that is not main)

It has been over a week since the latest nvm 0.40 started breaking pipelines.
While it would be ideal to wait, we can't wait forever.
I don't see any issue downgrading, this this isn't downgrading node just downgrading the version manager.

Testing
Using catalyst/moodle-mod_hvp#58 as the test to confirm the updated branch works -> https://github.com/catalyst/moodle-mod_hvp/actions/runs/10446880888/job/28924957408

Confirmed under top Set up job it uses the commit here e213f3106d307bd02f484be0ca11e21d939f1ef7 as the workflow

Confirmed it successfully installs moodle plugin CI + gets up to unit tests

Once happy with this before merging I will remove 6fa1abc - I didn't find a way to do this automatically in the PR commits

[keevan]

Could we actually remove the group-XX-to-XX changes from this PR and just delete them in a separate PR? The single ci.yml should replace all those ci files.

[keevan]

Happy with the changes otherwise (seems like others are also implementing the workaround like so).

Thanks Matt.

[matthewhilton]

Could we actually remove the group-XX-to-XX changes from this PR and just delete them in a separate PR? The single ci.yml should replace all those ci files.

Are these files not necessary? I found via testing it was calling on them hence why I had to change them, but maybe that was just a coincidence ?

Edit: #119 I think might be referenced. Will leave as-is since this is what has been tested, but in future we can probably just nuke those files.