switch from fx.symbolic_trace to dynamo_trace for converter test part-1

[lanluo-nvidia]

Description

Switch from fx.symbolic_trace to dynamo trace for converter test part-1

Since we ~2000 test cases I splited into batches to migrate them off fx.symbolic_trace

current batch: tests/py/dynamo/conversion/test_a*.py

There mainly two types of testcases require change:

1. for ops require custom dynamic shape support, will be changed to use dynamic_shapes instead of Input
2. for ops will be decomposed into multiple ops, these op test will be added in the test_composite_aten_op.py

Type of change

Please delete options that are not relevant and/or add your own.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified