[Merged by Bors] - test(txs): add unit test for rbf #19826

Job	Run time
filter-changes	3s
build-tools (ubuntu-22.04)	1m 48s
quicktests	2m 10s
build (ubuntu-22.04)	1m 50s
lint	4m 22s
build-tools (ubuntu-latest-arm-8-cores)	3m 13s
build (ubuntu-latest-arm-8-cores)	4m 36s
build-tools (macos-13)	4m 59s
build (macos-13)	5m 10s
unittests (ubuntu-22.04)	23m 18s
build-tools (self-hosted, macOS, ARM64, go-spacemesh)	11m 42s
build (self-hosted, macOS, ARM64, go-spacemesh)	19s
unittests (ubuntu-latest-arm-8-cores)	30m 27s
build-tools (windows-2022)	7m 9s
build (windows-2022)	7m 3s
unittests (self-hosted, macOS, ARM64, go-spacemesh)	19m 36s
unittests (windows-2022)	39m 5s
ci-status	4s
	2h 46m 54s

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