[BUG] `exec`/`npx`: npm v8.8+/9+ break with a self-reference

[ljharb]

Is there an existing issue for this?

• I have searched the existing issues

This issue exists in the latest npm version

• I am using the latest npm

Current Behavior

In a package foo with a bin, run npx foo, and you'll see sh: foo: command not found.

Expected Behavior

In a package foo with a bin, run npx foo, and the bin is invoked.

Steps To Reproduce

1. Clone any repo, presumably, but in this case, https://github.com/ljharb/publishers
2. Run npx npm@8.7 exec publishers, see that it invokes the binary properly.
3. Run npx npm@8.8 exec publishers, see that it errors.

Environment

• npm: <= 8.7, >= 8.8
• Node.js: 19

[wraithgar]

Duplicate of #5730

[wraithgar]

Nope sorry wrong issue