Op info test for masked.log_softmax .. masked.median

[qihqi]

Fix the Op info test for masked.log_softmax .. masked.median

1. Find the lines 163 to 167 of test_ops.py and remove
   masked.log_softmax .. masked.median from skip_list
2. Run op_info test with pytest test/test_ops.py
3. Fix the failure.

Please refer to
this guide as guide to fix:

Also refer to these PRs:

• Add bitwise_left_shift, bitwise_right_shift #7343
• Add support for baddbmm, bincount #7312
• Add support for trig, binary, algebraic ops #7325

[ManfeiBai]

add masked.log_softmax to masked.mean in #8014, masked.median is hard and created #8017 to continue track