Install with cache missing directory (nbconvert)

[Omegaice]

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Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

pdm init -n
pdm config install.cache on
pdm add nbconvert

Actual behavior

nbconvert's share folder is not copied from the cache (although it is in the cache directory)

~/example ❯ ls __pypackages__/3.10
bin  include  lib
~/example ❯ ls ~/.cache/pdm/packages/nbconvert-6.4.2-py3-none-any
bin  lib  referrers  share

Expected behavior

nbconvert's share folder's contents is linked correctly.

~/example ❯ ls __pypackages__/3.10
bin  include  lib  share

Environment Information

PDM version:        1.13.3
Python Interpreter: $HOME/.pyenv/versions/3.10.1/bin/python3.10 (3.10)
Project Root:       $HOME/example
Project Packages:   $HOME/example/__pypackages__/3.10
{
  "implementation_name": "cpython",
  "implementation_version": "3.10.1",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "5.13.0-30-generic",
  "platform_system": "Linux",
  "platform_version": "#33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC 2022",
  "python_full_version": "3.10.1",
  "platform_python_implementation": "CPython",
  "python_version": "3.10",
  "sys_platform": "linux"
}