[MUON] fix computation of delta phi in MFT-MCH matching

[aferrero2707]

The value of delta phi between the MFT and MCH tracks at the matching plane is restricted to the [-pi, pi] range, to fix the cases of large angular differences when the MFT and MCH tracks are at the opposite side of the horizontal plane at negative X values.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 678aac3 at 2026-09-21 15:02:

## sw/BUILD/O2-latest/log
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/TPC/base/src/TPCBaseLinkDef.h:75:56
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/TPC/base/src/TPCBaseLinkDef.h:83:135
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/TPC/base/src/TPCBaseLinkDef.h:84:135
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/ECal/base/src/ECalBaseLinkDef.h:19:48
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/RICH/base/src/RICHBaseLinkDef.h:18:48
Error: missing ; at end of rule at /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/Upgrades/ALICE3/MID/base/src/MI3BaseLinkDef.h:18:47


## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/GlobalTracking/src/MatchGlobalFwd.cxx:898:43: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/GlobalTracking/src/MatchGlobalFwd.cxx:899:43: error: statement should be inside braces [readability-braces-around-statements]
++ [[ 0 == 0 ]]
++ exit 1
--

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for aa7ad8b at 2026-09-21 18:42:

No log files found

Full log here.

[aferrero2707]

@f3sch @shahor02 the CI is failing for unrelated errors... do you know if the jobs will be resubmitted automatically, or if I have to retrigger them with a dummy commit? Is there a global issue with the CI at the moment?
Thanks!

[shahor02]

Failed CIs even did not start. Merging, since the change is trivial.