[0-size Tensor Retest]Fix fold、fused_feedforward、lstsq、broadcast_tensor api to sopport 0-size Tensor

[DanielSun11]

PR Category

Operator Mechanism

PR Types

Bug fixes

Description

修复fold、fused_feedforward、lstsq、broadcast_tensor 0-size复测报错

• fold
  之前添加的限制导致报错‘
• fused_feedforward
  反向填充不为0
• lstsq
  rank的dtype不对
• broadcast_tensor
  cpu 反向报段错误

pcard-67164

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@3a7d7f4). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...e/phi/kernels/cpu/broadcast_tensors_grad_kernel.cc	20.00%	4 Missing ⚠️

❌ Your patch status has failed because the patch coverage (33.33%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@ Coverage Diff @@ ## develop #74295 +/- ## ========================================== Coverage ? 33.33% ========================================== Files ? 2 Lines ? 6 Branches ? 0 ========================================== Hits ? 2 Misses ? 4 Partials ? 0 

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