Fix pymel implicit conversion into explicitly retrieve name in pymaya

[yamahigashi]

Description of Changes

• Updated code to explicitly retrieve node names in pymaya.
• PyMaya does not provide implicit name conversion, so the naming logic must be explicitly handled in pymaya.

Testing Done

Applied changes in a local Maya environment and verified that nodes are named correctly without errors.

[miquelcampos]

@yamahigashi
I did some research about returning implicit names in pymaya.node._Node class
but didn't fully commit the change. The code is commented out

I want to test a little more before merge this PR.
Do you want to try it?

[yamahigashi]

@miquelcampos ok, I will give it a try ;)

[miquelcampos]

@yamahigashi
I have done some testing, and changed the implementation to return longName like pymel does.
I will push this change in the next beta and lets try again before decide to merge this PR 😄