[CI] cross-project-tests failing on Linux

[boomanaiden154]

We are currently not running cross-project-tests as they are noted as failing. This should be investigated and probably reenabled pending capacity constraints.

[llvmbot]

@llvm/issue-subscribers-infrastructure

Author: Aiden Grossman (boomanaiden154)

We are currently not running `cross-project-tests` as they are noted as failing. This should be investigated and probably reenabled pending capacity constraints.