feat: introduce `UdpSocketState::try_send` APIs #4869

Job	Run time
msrv	56s
lint	1m 3s
audit	21s
features (ubuntu-latest)	39m 49s
test (ubuntu-latest, stable)	1m 21s
features (macos-latest)	12m 22s
test (ubuntu-latest, beta)	1m 8s
test-android (x86_64-linux-android, x86_64, 26)	3m 30s
features (windows-latest)	23m 17s
test-aws-lc-rs	1m 56s
test-android (i686-linux-android, x86, 26)	3m 59s
test (macos-latest, stable)	1m 16s
test (windows-latest, stable)	2m 18s
test on freebsd	3m 24s
	1h 36m 40s

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