Fix 14947: FP algorithmOutOfBounds with array of arrays #20526

Job	Run time
build_make (ubuntu:24.04)	4m 29s
build_make (ubuntu:25.10)	5m 7s
build_cmake (alpine:3.23, false, false)	3m 30s
build_make (alpine:3.23)	4m 45s
build_cmake (ubuntu:24.04, true, true)	5m 55s
build_cmake (ubuntu:25.10, true, true)	4m 32s
	28m 18s

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