[bug fix] fix sharding stage1 allgather overlap bug, which needs to forbiden pin memory

[iosmers]

PR types

Bug fixes

PR changes

Others

Description

1、sharding stage overlap不能正确生效，原因是没有禁用pin memory 2、必须使用paddle.io.reader 里的 use_pinned_memory， paddle.io.base里面的use_pinned_memory(False)无法生效，原因未知

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 54.40%. Comparing base (5bdf751) to head (09449fc). Report is 9 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #8594 +/- ## =========================================== - Coverage 54.42% 54.40% -0.02% =========================================== Files 632 632 Lines 99451 99495 +44 =========================================== + Hits 54129 54134 +5 - Misses 45322 45361 +39 ```

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