[ATR-28845] Protect against trigger navigation graphs with over uint16_t::max nodes

This provides protection for the crash in [ATR-28845] while work on the proper fix, !74315 (merged), continues.

Change tested against the reproducer on [ATR-30141]. This is a very rare occurrence.

Both choices in the mitigation code block were tested.

Also targets 24.0.52-patches

This merge request affects 2 packages:

• Trigger/TrigAnalysis/TrigNavSlimmingMT
• Trigger/TrigSteer/TrigCompositeUtils

Affected files list will not be printed in this case

Adding @tamartin as watcher

added 24.0 Trigger analysis-review-required review-pending-level-1 labels

CI Result SUCCESS (hash 4465bce8)

	Athena	AnalysisBase	AthAnalysis
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output (remote access info)

I'm not sure if this is affect analysis, but given that it is a protection against an integer overrun this is fine for us either way. Approving for AR.

Nils [Analysis RC]

added analysis-review-approved label and removed analysis-review-required label

mentioned in merge request !74315 (merged)

Changes are fine and CI succeeds, approving for L1.

-L1

added review-approved label and removed review-pending-level-1 label

added review-approved-point1 label

merged

mentioned in commit 987a6b8f

picked the changes into the branch cherry-pick-987a6b8f with commit 9ae43d46

mentioned in commit 9ae43d46

mentioned in merge request !74469 (closed)

mentioned in merge request !74494 (merged)

mentioned in commit 596bf836

mentioned in merge request !75481 (merged)

mentioned in commit 09932b5f