[XLA] Reshape mover should only transform a reshape/transpose instruction if

[XLA] Reshape mover should only transform a reshape/transpose instruction if
all the users of the instruction can be transformed.

This is because if only part of the users of a reshape/transpose instruction are
reshape-move transformed, the original reshape/transpose instruction can't be
eliminated while a modified clone copy of the instruction is added to support
the transformation. As a result, the transformation increases the number of
reshape/transpose instructions in the kerenel and can potentially increase
memory consumption.

Add two test cases.

PiperOrigin-RevId: 191529681