[Testing] Use DisposableElementsAttr in doing constant propagation for zTensor

[tungld]

• This patch reverts the PR [NNPA] Memory reduction of stickified constant by stickifying at file writing  #2917
  • The old way in [NNPA] Memory reduction of stickified constant by stickifying at file writing  #2917 is to propose a ConstantOpInterface and delay the stickification until storing constants-to-file. Two main disadvantages are: 1) constant propagation for ztensor at zhigh dialect is off, 2) it does not work if store-constants-to-file is off.
• This patch extends the constant prop mechanism (that currently applies to ONNXConstant) to ZHighStickifiedConstant, so that the zhigh constant prop can benefit from the memory management for DisposableElementsAttr.

Quick experiment: the peak compile memory consumptions of #2917 and this PR when compiling the gpt2-large model for NNPA (744M parameters, the constant file's size is 3.2GB) are quite similar, both are about 9GB.

This patch contains the reverting code so it's no easy to follow. To ease the review, I merge all new changes (not the reverting code) into a single commit.