Update the lsan suppression to capture tbb leaks.

Additionally document that we only want to suppress the known
leak in loguru::set_thread_name.

Utilities/DynamicAnalysis/lsan.supp

 leak:libX11*
-leak:loguru.hpp
+leak:libtbb*
 leak:/usr/lib/x86_64-linux-gnu/openmp*
 leak:/usr/lib/x86_64-linux-gnu/libopen-pal*
+leak:loguru::set_thread_name