In SERVER-54747 we created a build with the new TCMalloc library but the tests were not included as part of the build. The following items should be completed as part of this ticket:

• The TCMalloc testing directory contains BUILD.bazel files for use with the Bazel build system; these Bazel files should be removed and the appropriate SCons files added, and the higher level SCons files updated as needed.
• Verify the tests compile using the MongoDB toolchain version of gcc.
• Verify the tests pass. If they don't pass, investigate as to why and update this ticket with the findings.