CI Bug: wrong cache key for no-std test coverage

[JulianGCalderon]

When trying to fetch the test coverage cache for no-std tests, the wrong key is used, which causes the step to fail.

Error: Failed to restore cache entry. Exiting as fail-on-cache-miss is set. Input key: codecov-cache-test-no_std--...

This happens because the tests are partitioned into:

• codecov-cache-test-no_std#1
• codecov-cache-test-no_std#2
• codecov-cache-test-no_std#3
• codecov-cache-test-no_std#4

But the upload coverage workflow tries to restore it as if it were a single partition:

• codecov-cache-test-no_std

This applies to:

• codecov-cache-test-no_std-extensive_hints
• codecov-cache-test-no_std-mod_builtin

We should change the upload workflow to take it into account and restore it as separate partitions.

links:

• https://github.com/lambdaclass/cairo-vm/actions/runs/14316883762/job/40126134343#annotation:7:59
• https://github.com/lambdaclass/cairo-vm/actions/runs/14316883762/job/40126134343#annotation:12:59
• https://github.com/lambdaclass/cairo-vm/actions/runs/14316883762/job/40126134343#annotation:17:59