Fix AntreaProxy not deleting stale UDP conntrack entries for the virtual NodePort DNAT IP #32211

Job	Run time
Check whether tests need to be run based on diff	19s
Build Flow Aggregator image to be used for Kind e2e tests	2m 38s
Build Antrea image to be used for Kind e2e tests	3m 41s
E2e tests on a Kind cluster on Linux with non default values (proxyAll=true, LoadBalancerMode=DSR...	43m 29s
E2e tests on a Kind cluster on Linux	42m 50s
API compatible with client version N-1	8m 20s
E2e tests on a Kind cluster on Linux (hybrid)	36m 26s
E2e tests on a Kind cluster on Linux for Flow Visibility	25m 47s
E2e tests on a Kind cluster on Linux with all features enabled	53m 44s
E2e tests on a Kind cluster on Linux (noEncap)	35m 26s
NetworkPolicy conformance tests on a Kind cluster on Linux	7m 56s
Antrea-native (VLAN) secondary network tests on a Kind cluster on Linux	3m 19s
Upgrade from Antrea version N-1	8m 59s
Upgrade from Antrea version N-2	8m 45s
Test installation using 'antctl check' command	3m 17s
API compatible with client version N-2	8m 36s
Validate metrics in Prometheus document match running deployment's	1m 48s
Delete uploaded images	3s
	4h 55m 23s

Provide feedback