Support dynamic convolutions and pooling operations without the TOSA
shape extension when partitioning proves lowering needs neither input-
size adjustment nor dynamic padding.

Recognize value-only max pooling in its exported with-indices form
before backend preprocessing canonicalizes it.

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils
@Sebastian-Larsson @robell @rascani

Signed-off-by: Oscar Andersson <oscar.andersson@arm.com>
Co-authored-by: Oscar Andersson <87121123+oscarandersson8218@users.noreply.github.com>