Simplified and more basic fixpoint iteration for ControlDependenceGraphPass

[KuechA]

This PR adapts the ControlDependenceGraphPass to the new fixpoint iteration implementation

[codecov]

Codecov Report

Attention: Patch coverage is 81.15942% with 13 lines in your changes missing coverage. Please review.

Please upload report for BASE (ak/fixpointv2@9e5a85a). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...fer/aisec/cpg/passes/ControlDependenceGraphPass.kt	80.88%	6 Missing and 7 partials ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...ofer/aisec/cpg/helpers/functional/BasicLattices.kt	90.00% <100.00%> (ø)
...fer/aisec/cpg/passes/ControlDependenceGraphPass.kt	83.42% <80.88%> (ø)

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