[autoparallel] fixed wrong generated strategy for dot op

[FrankLeeeee]

What is the problem?

The previous node handler lacks one correctness check which is to check whether the sharding spec's entire_shape attribute is the actual physical tensor shape.

What does this PR do?

This PR mainly does 3 things.

1. I added the shape check in the node handler to make sure the results of post-process is correct. Such stricter checks will help us identify some potential bugs in our implementation.
2. Thanks to the first point, I found that there are some bugs in the linear strategy generator and node handler. Thus, I fixed the broken unit testing.
3. Some other broken unit tests are skipped temporarily and I will fix them in a separate PR.