🐛 Union Type Fixes + More Smart Link Fixes

[MFA-X-AI]

Description

This PR fixes the following:

• fix union link logic if passed from non-literal: as node to node parameter linking is now fixed in 🐛 Smart Link Fixes #348 , the handling for Union needs to be addressed. This PR now properly parses each type in the Union (ie InArg[Union[str|int]]) and allows linking if one datatype mathces.
• fix smart link not considering compulsory symbol: previously the compulsory [★] affects the smartlinking. Now this PR strips the ★ before matching.
• fix smart link if using chain linking: as flow ports do not have data types, this PR properly handles it.
• fix union symbol from not appearing in ports: previously Union type was internally set if there's a .. This PR properly recognizes it if type Union is passed.

References

#348

Pull Request Type

• Xircuits Core (Jupyterlab Related changes)
• Xircuits Canvas (Custom RD Related changes)
• Xircuits Component Library
• Xircuits Project Template
• Testing Automation
• Documentation
• Others (Please Specify)

Type of Change

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

Tests

• ensure that the union link between nodes work as expected
• ensure taht smart link properly works even with compulsory ports
• ensure that smart link works if using chain linking
• ensure that the union symbol appears on union types

Tested on?

• Windows
• Linux Ubuntu
• Centos
• Mac
• Others (State here -> xxx )

[github-actions]

👈 Launch a binder notebook on branch XpressAI/xircuits/fahreza/fix-union-typechecks