Fix Test Optimization init when repo root cannot be determined#8533

nikita-tkachenko-datadog merged 2 commits intomasterDataDog/dd-trace-java:masterfrom

nikita-tkachenko/fix-npe-when-no-repo-rootDataDog/dd-trace-java:nikita-tkachenko/fix-npe-when-no-repo-rootCopy head branch name to clipboard