Add torch test flag to codecov CI

Author: dfalbel

.github/workflows/test-coverage-pak.yaml

@@ -23,6 +23,7 @@ jobs:
       RSPM: https://packagemanager.rstudio.com/cran/__linux__/bionic/latest
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       TORCH_INSTALL: 1
+      TORCH_TEST: 1
       DEBIAN_FRONTEND: 'noninteractive'
 
     steps: