[BUG] npx appears to be broken in latest release

Since the latest GA release, most attempts to use npm in Windows are broken. cross-env and npx both no longer work properly and cannot find any of the commands. Both previously worked for cross-platform execution of things like husky and jest. This means our commit hooks are also now broken in Windows.

Current Behavior:

Since the GA release of npx 7.5.2, we cannot execute commands on Windows CLI. npm scripts that previously worked like npx and cross-env no longer function. Commit hooks like husky-run are non-functional.

Where previously working, we now get messages like:

> npx jest --coverage

'jest' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code 1
npm ERR! path C:\Code\nl\node-graphql-utils
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c jest --coverage

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\user\AppData\Local\npm-cache\_logs\2021-02-02T23_50_01_621Z-debug.log
npm ERR! code 1
npm ERR! path C:\Code\nl\node-graphql-utils
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c npx jest --coverage

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\user\AppData\Local\npm-cache\_logs\2021-02-02T23_50_01_653Z-debug.log

and

> git -c user.useConfigOnly=true commit --quiet --allow-empty-message --amend --no-edit
'husky-run' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code 1
npm ERR! path C:\Code\nl\node-graphql-utils
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c husky-run pre-commit

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\user\AppData\Local\npm-cache\_logs\2021-02-03T03_35_51_503Z-debug.log

Expected Behavior:

Core features should work as with v6 unless documented as a breaking change. Documentation also says npx it should prompt to install a package if it doesn't exist.

Steps To Reproduce:

• npm install -g npm@latest
• npm install jest --save-dev in project
• npm install husky --save-dev in project
• Confirm both are installed with npm ls jest and npm ls husky
• Attempt npx jest
• Attempt a git commit on Windows

Environment:

• OS: Windows 10 10.0.19042
• Node: 14.15.4
• npm: 7.5.2

No source files or tests are named. Start by reproducing the Windows 10 failure with Node 14.15.4 and npm 7.5.2 using the listed npx, cross-env, and husky commit-hook commands; done means installed project commands and commit hooks work as they did with npm 6.