Previous PR eclipse-openj9#17107 target
to prevent exception "committed argument cannot be less than 0" for
MemoryPool "balanced-reserved" during collecting memoryUsage at the end
of GC(balanced GC only), but there are two special cases haven't been
covered.

Fix case 1: maxHeapExpansionRegions could add on maxEdenChange and use
_extensions->globalVLHGCStats._heapSizingData.edenRegionChange to notify
heap resize to adjust heap size to match eden change, but it did not
consider the case which eden size is bigger than free memory, so update
_extensions->globalVLHGCStats._heapSizingData.edenRegionChange =
OMR_MIN(maxHeapExpansionRegions, edenChangeWithSurvivorHeadroom +
(intptr_t)(_edenRegionCount - freeRegions));
 for keeping free memory >= eden size after heap resize.

Fix case 2: eden region can not be smaller than 1, when free region is 0
eden region size can be 0.

Add Assertion checks to confirm free size >= eden size.

Update to correct freeTenure at the beginning of PGC

should count out free eden size(for most case, free eden would be
closed to 0, but in some cases free eden is significant, it might
confuse the heap resize algorithm).

 - In performResize() in case there is no heap resize, check if there is
the case that free size is small than eden size due to the conflict
between eden resize and heap resize, reCalculateEdenSize if it happens.

 - Fix zero-eden resize conflict in Balanced heap sizing.
calculateEdenSize() to size eden using both current free regions and
potential heap expansion. In the conflict case where eden sizing wants
more expansion than heap sizing permits, eden is later recalculated
without heap expansion allowance. If the post-heap-resize free space is
zero, that recalculation can clamp eden to zero, which then leads to
OOM. Fix this in checkResize() by detecting the zero-free-space conflict
case before resize is finalized. When eden requires more growth than the
chosen heap resize provides, and the resulting free space after heap
resize would be zero, adjust the heap resize to edenSize - freeSize so
the previously computed eden size is preserved.

Signed-off-by: lhu <linhu@ca.ibm.com>