Enable mcstas-antlr in McCode GitHub CI

[willend]

Free-form text area

Please describe what your PR is adding in terms of features or bugfixes:

Work on CI and selected comps / instrs to enable mcstas-antlr in CI.

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Declaration of use of AI-tools

• Please add a checkmark here if you used AI-tools during the work for this contribution
• Furter, please describe how / where and for what the tools were used:

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Development OS / boundary conditions

Please describe what OS you developed and tested your additions on, and if any special dependencies are required:

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PR Checklist for contributing to McStas/McXtrace

For a coherent and useful contribution to McStas/McXtrace, please fill in relevant parts of the checklist:

• My contribution includes patches to an existing component file

  • I have ensured that basic use of the component is OK (e.g. an instrument using it compiles?)
  • I have used the mctest utility to test one or more instruments making use of the component (please attach mcviewtest report as screenshot in comments)

• My contribution includes patches to an existing instrument file

  • I have used the mctest utility to test the instrument (please attach mcviewtest report as screenshot in comments)

• My contribution contains something else

  • Explanation is added in free form text above or below the checklist

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[willend]

Status:

• CI in place to run mcstas-antlr on Linux/conda
• Various minor edits to components and instrument files for succesful mcstas-antlr parsing (a few of them workarounds that warrant work on the mcstas-antlr side.
• Just one instrument still fails to compile: Test_StatisticalChopper - looks like an issue with INHERIT Montor_nD EXTEND

Have written notes on slack for the things that should be looked at @g5t - can become an issue over at mccode-antlr if you prefer?

[willend]

Merging in time for a full set of nighlies...

[g5t]

* Just **one** instrument still fails to compile: `Test_StatisticalChopper` - looks like an issue with `INHERIT Montor_nD EXTEND`

I fixed parsing the INHERIT grammar change for StatisticalChopper.comp in mccode-dev/mccode-antlr#302 but must have implemented the rule incorrectly.