Optimize Dask EWA persist and prune fornav tasks #1168

Job	Run time
build_sdist	24s
Build wheels on macos-14 arm64	4m 23s
Build wheels on ubuntu-22.04 x86_64	5m 56s
Build wheels on ubuntu-24.04-arm aarch64	6m 35s
Build wheels on windows-latest ARM64	7m 44s
Build wheels on windows-latest AMD64	7m 9s
Build wheels on macos-15-intel x86_64	11m 29s
upload_pypi	11s
upload_test_pypi	0s
	43m 51s

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