CI - Failed to link `rusty_v8`

[bfops]

This error seems to be happening in the csharp-testsuite on many PRs:

error: could not find native static library `rusty_v8`, perhaps an -L flag is missing?
error: could not compile `v8` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
Error: Process completed with exit code 101.

Example: https://github.com/clockworklabs/SpacetimeDB/actions/runs/20176972518/job/58112500851

[bfops]

I think we can call this fixed unless we've seen it again? The fix is hacky but it seems to have worked.