Packages are extracted with incorrect permissions

Description

I was testing Microsoft.Playwright for browser testing, and found that when I installed the package in my project and restored it with Paket, Paket extracted the package with read-only permissions on the entire directory tree (r--r--r--), which makes the package unusuable because it attempts to invoke files from the package that are copied to your test projects' output directory.

After trying the package with Nuget, I found that Nuget marks the extracted directories with rwxr-xr-x, and the extracted binaries/files with rwxr--r--, and those permissions enable the package to work.

Repro steps

1. Make a new project according to the instructions here, but use Paket to install the Microsoft.Playwright dependency instead of nuget.

2. The playwright install step should fail due to permissions of script files copied to the output directory

Expected behavior

Playwright should work

Actual behavior

Playwright encounters permissions errors so it can't launch the supporting binaries.

Known workarounds

You can do a chmod -R <path to output dir>/.playwright to fix the permissions of the files.

Start by reproducing the Paket installation with Microsoft.Playwright and compare the extracted directory and file permissions with a NuGet installation. Trace the package extraction path and add or update coverage for permissions; done when Playwright's copied scripts and binaries can launch without a manual chmod workaround.