[Bug] Courses with unit ranges or VAR units are sorted as having 0 units

[ap-1]

Expected Behavior

See image below

Steps to Reproduce

Device Information

All

[tsurbs]

Is the sort feature on a non-main branch? @ap-1

[ap-1]

Is the sort feature on a non-main branch? @ap-1

it should be up to date be here

[tsurbs]

ok ill fix on that branch by merging in my units range branch here

[tsurbs]

Also will update it to be current w/ main so we can merge in the feat?

[ap-1]

the branch I linked is associated with #231, we can merge main into it from there but iirc there is another issue with it that has to be fixed

[tsurbs]

What is desired behavior here anyway... if we are sorting by the min of the range of units, then you could argue it should be zero

[ap-1]

Behavior for unit ranges: https://github.com/ScottyLabs/courses-backend/blob/8e200a3fb378e600582833a2dc7fb9686badf08a/crates/models/src/units.rs#L24-L59

Behavior for VAR (i'm treating VAR as positive infinity): https://github.com/ScottyLabs/courses-backend/blob/8e200a3fb378e600582833a2dc7fb9686badf08a/crates/models/src/units.rs#L280-L305

(actually maybe the tests are a more useful reference: https://github.com/ScottyLabs/courses-backend/blob/8e200a3fb378e600582833a2dc7fb9686badf08a/crates/models/src/units.rs#L458-L486)