cmssw: CMSSW tests failing again with `Fatal Root Error: @SUB=Minuit2`

Hello,

Since we moved to ROOT 6.30, we are seeing again errors like the one reported in https://github.com/cms-sw/cmssw/issues/42979 throwing the following exception:

----- Begin Fatal Exception 15-Dec-2023 07:53:04 CET-----------------------
An exception of category 'FatalRootError' occurred while
   [0] Processing global end Run run: 1
   [1] Calling method for module DQMGenericClient/'postProcessorMuonTrack'
   Additional Info:
      [a] Fatal Root Error: @SUB=Minuit2
VariableMetricBuilder Initial matrix not pos.def.

In this case, we see the errors on multiple archs:

• el8_aarch64_gcc12: RelVals 25202.2 and 1365.0.
• el8_ppc64le_gcc12: RelVal 25202.15.
• slc7_amd64_gcc12: Unit test PrimaryVertex (module Alignment/OfflineValidation).

https://github.com/cms-sw/cmssw/pull/43106 fixed this issue in the past by using likelihood fit instead of chi-square, but it seems to be back in ROOT 6.30.

Thanks!

FYI @guitargeek, @smuzaffar