Fix memory stats printing (#20061)
### Fix memory stats printing
The mmeory stats printing is failed when module is in eval mode, doing
ORTModule wrap. At that time, runtime inspector for training manager
should have training model being true, but got a false (because existing
logic get the boolean from module.training). Runtime inspector as part
of training manager or inference manager should know it is serving
training or not explicitly, so we cannot depend on the stat of
module.training during ORTModule initialization.
### Motivation and Context
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