fix: Filter INFO messages in external error detection

[bd713]

After PR #3856 introduced external error detection, VTK's informational messages are being incorrectly flagged as error.

This PR adds filtering in the external error handler lambda (in initializeEnvironment.cpp) to skip messages containing INFO| patterns before treating them as errors.

Before:

***** ERROR
***** LOCATION: (external error, detected post GEOS loading)
2025-12-01 10:26:29.658 (   1.194s) [    7FC6BFD99040]    vtkExtractEdges.cxx:329   INFO| Executing edge extractor with original point numbering

** StackTrace of 6 frames **
Frame 0: geos::OutputStreamDeviation::flush(std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >)> const&, std::basic_string_view<char, std::char_traits<char> >) 
Frame 1: geos::EventManager::run(geos::DomainPartition&) 
Frame 2: geos::GeosxState::run() 
Frame 3: main 
Frame 4: /lib64/libc.so.6 
Frame 5: __libc_start_main 
Frame 6: _start 
=====

After:

2025-12-10 16:25:31.316 (   0.510s) [    7FE267A91040]    vtkExtractEdges.cxx:329   INFO| Executing edge extractor with original point numbering

[jhuang2601]

Great, thanks for fixing it.