Move accumulation functions mask_positions and cumsum_1d to tensor accumulation module #5814

Job	Run time
build_linux (3.10)	35m 2s
build_linux (3.13)	33m 43s
build_windows (3.12)	40m 21s
build_windows (3.9)	37m 57s
build_windows (3.10)	37m 57s
build_linux (3.9)	34m 39s
build_windows (3.11)	39m 5s
build_windows (3.13)	40m 0s
build_linux (3.12)	34m 50s
build_linux (3.11)	33m 56s
test_examples_linux (3.11, false, ubuntu-22.04)	8m 25s
test_linux (3.11, false, ubuntu-22.04)	10m 51s
test_linux (3.10, false, ubuntu-22.04)	10m 40s
test_linux (3.9, false, ubuntu-22.04)	10m 7s
test_linux (3.12, false, ubuntu-22.04)	10m 56s
test_linux (3.13, false, ubuntu-22.04)	10m 15s
array-api-conformity (3.10, false, ubuntu-22.04)	4m 59s
test_windows (3.11, false, windows-latest)	14m 51s
test_windows (3.12, false, windows-latest)	15m 3s
test_windows (3.9, false, windows-latest)	14m 41s
test_windows (3.13, false, windows-latest)	13m 28s
test_windows (3.10, false, windows-latest)	15m 29s
upload_linux	0s
upload_windows	0s
Clean up anaconda packages	0s
	8h 27m 15s

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