[TECH DEBT]: Remove `stdlib_module_names` from `KnownList`

[JCZuurmond]

Is there an existing issue for this?

• I have searched the existing issues

Problem statement

Currently the stdlib_module_names are added to the KnownList while they are not in the known list.

See code here:

ucx/src/databricks/labs/ucx/source_code/known.py

Lines 79 to 80 in 3ca395c

	for name in sys.stdlib_module_names:
	self._module_problems[name] = []

It is a bit confusing and not completely accurate

Proposed Solution

Remove dynamically adding the stdlib_module_names to the KnownList. It will have some ripple effect accros the code base. Where test fail, the standard library modulse should be handled separately

Additional Context

No response