Enable disabling TX checksum offload for Antrea host gateway #32417

Job	Run time
Compute outputs for use by other jobs	14s
build-flow-aggregator	2m 23s
build-antrea-migrator	13s
build-antrea-mc-controller	3m 23s
build (linux/amd64, ubuntu-latest, amd64)	9m 34s
build (linux/arm64, github-arm64-2c-8gb, arm64)	13m 1s
build-scale	1m 59s
build (linux/arm/v7, github-arm64-2c-8gb, arm)	12m 34s
build-ubi	7m 52s
build-windows	2m 45s
push-manifest	0s
	53m 58s

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