[TECH DEBT]: Skip parsing notebook if present in the NotebookLinter._python_tree_cache

[JCZuurmond]

Is there an existing issue for this?

• I have searched the existing issues

Problem statement

Skip parsing notebook if present in the NotebookLinter._python_tree_cache. This means the notebook was already parsed because it was referred by another notebook using a RunCell

Proposed Solution

Use the cache to get the Python tree instead of parsing.

Notes:

• this requires to extend the cache to contain failures too.
• A notebook can be run from multiple parent notebooks. We need to handle that situation

Additional Context

No response