railway shell not grabbing ctrl+c handler from node when installed via pnpm

[alexng353]

I say pnpm because I haven't tested npm or yarn, but my hypothesis should hold true for either of those since the way the binary is executed is the same via all three package managers.

hypothesis: The problem is that when cli is installed and run through node, it is run through this file. Then, on ctrl + c the railway.js file quits, killing the underlying cli process.

Experimentally proven to be a problem with pnpm installed version of cli on 2023-08-20, installing manually using a download + editing PATH does not yield the same error

CLI Version: 3.4.0
Installed via: pnpm 8.6.12

Potential fix: detect railway shell startup in the railway.js file