Fixing upper issue in MadGraphControl

Got a little .upper() happy with the last MR. Of course, the params dictionary does not have everything in upper to begin with. This fixes a crash seen in the ART tests. Thanks to @hmildner for the report!

This merge request affects 1 package:

• Generators/MadGraphControl

This merge request affects 1 file:

• Generators/MadGraphControl/python/MadGraphUtils.py

Adding @zmarshal as watcher

added Generators main review-pending-level-1 labels

WARNING: big files (>100K) are found in the changeset

120K in file Generators/MadGraphControl/python/MadGraphUtils.py

CI Result SUCCESS (hash f68a74e3)

	Athena	AthGeneration
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 5741] (remote access info)

MR looks fine from L1 perspective, CI shows no problems - approving.

Cheers, Yuriy (L1)

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit 6561c64c