chore: add additional testcases for fswap #4457

Job	Run time
install-tparse	14s
cleanup-runs	7s
build (amd64, gcc)	1m 1s
split-test-files	9s
build (arm64, aarch64-linux-gnu-gcc, g++-aarch64-linux-gnu)	1m 8s
test-cosmovisor	2m 35s
test-race (00)	3m 42s
tests (00)	3m 39s
test-race (01)	3m 9s
tests (01)	4m 57s
test-race (02)	1m 59s
tests (02)	4m 46s
test-race (03)	2m 14s
tests (03)	3m 32s
upload-coverage-report	36s
	33m 48s

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