Stats for some th3 painting options.

[couet]

Stats were missing for some TH3 drawing options.
See here:
https://root-forum.cern.ch/t/statistical-box-does-not-appear-on-3d-histogram/55173/

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac12/noimt, mac11/cxx14, windows10/cxx14
How to customize builds

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3.
Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build
See console output.

[phsft-bot]

Build failed on windows10/cxx14.
Running on null:C:\build\workspace\root-pullrequests-build
See console output.

Failing tests:

• projectroot.roottest.root.io.transient.base.roottest_root_io_transient_base_WriteFile
• projectroot.roottest.root.io.transient.base.roottest_root_io_transient_base_hadd_autoload

[github-actions]

Test Results

         7 files           7 suites   1d 13h 57m 47s ⏱️
  2 433 tests   2 428 ✔️ 0 💤 5 ❌
16 792 runs  16 787 ✔️ 0 💤 5 ❌

For more details on these failures, see this check.

Results for commit 20ada64.