Fix #13812 value potentially truncated in ValueFlowAnalyzer::evaluteI… #19513

Job	Run time
build_cmake (ubuntu:24.04, true, true)	5m 23s
build_cmake (alpine:3.23, false, false)	4m 20s
build_make (alpine:3.23)	6m 6s
build_make (ubuntu:25.10)	5m 10s
build_make (ubuntu:24.04)	4m 41s
build_cmake (ubuntu:25.10, true, true)	2m 55s
	28m 35s

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