workaround vulkan padding stall with new nvidia driver

[nihui]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.01%. Comparing base (81c7df7) to head (e65485f).
Report is 43 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5953      +/-   ##
==========================================
+ Coverage   95.20%   96.01%   +0.81%     
==========================================
  Files         823      767      -56     
  Lines      258776   246911   -11865     
==========================================
- Hits       246368   237078    -9290     
+ Misses      12408     9833    -2575     

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[github-actions]

The binary size change of libncnn.so (bytes)

architecture	base size	pr size	difference
x86_64	16465128	16465128	0 😘
armhf	7335260	7335260	0 😘
aarch64	10704800	10704800	0 😘

[Copilot]

Copilot wasn't able to review any files in this pull request.

Files not reviewed (2)

• src/layer/vulkan/shader/padding_pack1to4.comp: Language not supported
• src/layer/vulkan/shader/padding_pack1to8.comp: Language not supported

[Copilot]

Copilot wasn't able to review any files in this pull request.

Files not reviewed (2)

• src/layer/vulkan/shader/padding_pack1to4.comp: Language not supported
• src/layer/vulkan/shader/padding_pack1to8.comp: Language not supported