Implement nexus-based activity cancels #2897

Job	Run time
Code format	47s
Unit test with in-memory test service [Edge]	12m 16s
Javadoc	3m 14s
Unit test with CLI	15m 4s
Unit test with cloud	4m 44s
Build native test server / Build native test server (windows-latest, windows, amd64)	7m 1s
Build native test server / Build native test server (ubuntu-latest, linux, amd64, false)	6m 34s
Build native test server / Build native test server (ubuntu-24.04-arm, linux, arm64)	6m 17s
Build native test server / Build native test server (macos-latest, macOS, arm64)	8m 18s
Build native test server / Build native test server (ubuntu-latest, linux, amd64, true)	6m 10s
Build native test server / Build native test server (macos-15-intel, macOS, amd64)	10m 50s
	1h 21m 15s

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