refactor: [sparse_weights] get for predict #5693

Job	Run time
manylinux.aarch64.py${{ matrix.config.version }}.build	0s
manylinux.amd64.py3.6.build	8m 13s
manylinux.amd64.py3.7.build	7m 6s
ubuntu-latest.amd64.py3.8.sdist-bundle	58s
manylinux.amd64.py3.8.build	7m 29s
macos.amd64.py3.6.build	15m 18s
manylinux.amd64.py3.9.build	8m 24s
macos.amd64.py3.7.build	11m 19s
manylinux.amd64.py3.10.build	7m 16s
windows-2019.amd64.py3.6.build	24m 54s
macos.amd64.py3.8.build	13m 26s
windows-2019.amd64.py3.7.build	29m 59s
macos.amd64.py3.9.build	12m 4s
macos.amd64.py3.10.build	13m 0s
windows-2019.amd64.py3.8.build	27m 37s
windows-2019.amd64.py3.9.build	31m 28s
windows-2019.amd64.py3.10.build	26m 19s
manylinux.aarch64.py${{ matrix.config.version }}.test	0s
ubuntu-latest.amd64.py3.8.sdist-build-test	7m 19s
manylinux.amd64.py3.6.test	4m 52s
manylinux.amd64.py3.7.test	5m 46s
manylinux.amd64.py3.8.test	4m 38s
manylinux.amd64.py3.9.test	3m 27s
manylinux.amd64.py3.10.test	4m 53s
macos.amd64.py3.6.test	5m 24s
macos.amd64.py3.7.test	5m 15s
macos.amd64.py3.8.test	11m 47s
macos.amd64.py3.9.test	12m 18s
macos.amd64.py3.10.test	12m 55s
windows-2019.amd64.py3.6.test	17m 1s
windows-2019.amd64.py3.7.test	17m 35s
windows-2019.amd64.py3.8.test	14m 40s
windows-2019.amd64.py3.9.test	15m 58s
windows-2019.amd64.py3.10.test	17m 14s
	6h 45m 52s

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