ValueFlow: various small optimizations#6756

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firewave wants to merge 8 commits intodanmar:mainfrom

firewave:vf-opt-xxx

Commits on Aug 23, 2025

valueflow.cpp: avoid potentially unnecessary evaluation in `parseCompareEachInt()`
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added bailout message TODOs
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valueflow.cpp: made some `SymbolicInferModel` members private
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valueflow.cpp: refactored `valueFlowForwardLifetime()` to avoid unnecessary operations
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ValueFlow: avoid possibly unused assignments in `combineValueProperties()`
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forwardanalyzer.cpp: added TODO
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valueflow.cpp: switched check order in `getKnownValueFromToken()`
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programmemory.cpp: avoid unnecessary copy in `ProgramMemoryState::get()` [skip ci]
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