Persisting literal values more conservativly

[oxisto]

Fixes issues with python interface files

[konradweiss]

LGTM, If we see that there is a type we have not considered in this distinction that is not supposed to run into the default case, we can then add that distinction there.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 77.03%. Comparing base (698937e) to head (b5388f9).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../aisec/cpg/graph/statements/expressions/Literal.kt	66.66%	0 Missing and 2 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...tlin/de/fraunhofer/aisec/cpg/persistence/Common.kt	88.76% <ø> (+1.95%)	⬆️
.../aisec/cpg/graph/statements/expressions/Literal.kt	77.77% <66.66%> (-8.89%)	⬇️

... and 1 file with indirect coverage changes

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