ui : don't use npx inside package.json script

[eapache]

Overview

Don't use npx inside of a package.json script. It's not necessary, and can potentially install an unexpected version of the package if npm ci hasn't already been run.

Requirements

• I have read and agree with the contributing guidelines
• AI usage disclosure: YES - Sol found this and wrote the (extremely trivial) diff, as part of an old supply-chain-security audit, although it's more of a cleanup at than any real risk.

[nikwen]

Good catch!