Suppress GCC warning in TreeEnsembleAggregator (#22062)
### Description
When building with GCC 14.2.1, I got the following warning:
onnxruntime/core/providers/cpu/ml/tree_ensemble_aggregator.h:329:59:
error: template-id not allowed for constructor in C++20
[-Werror=template-id-cdtor]
Remove template parameters from the constructor: The constructor
TreeAggregatorMax<InputType, ThresholdType, OutputType> has been
simplified to TreeAggregatorMax, because the compiler already knows the
template parameters from the class definition.
### Motivation and Context
Fix the build issue
Signed-off-by: Clément Péron <peron.clem@gmail.com>
