Collapsing expand(collapse(src)) to cast(src) is supported in cases
where the source and result are cast compatible but not equal. When the
source has dynamic dimensions this leads to cases where the cast is
enabled even though certain dimensions cast from static to dynamic when
the dynamic size is not assured to be equal to the static size.
Currently blocking applying this folding when the source has dynamic
dimensions to preserve correctness.
In the future it could be possible to enable some cases of folding when
not all dimensions of the source are static.
Such cases could be when:
1) expand and collapse happened on non dynamic dims
2) expand and collapse on dynamic dims could be folded to no op
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