devEngines.runtime is not respected by node shim consistently #1948

Describe the bug

node shim is not respecting devEngines.runtime if added manually to the package.json

Steps to reproduce

1. Create new directory with simple package.json:

   mkdir test
   npm init --yes

2. Add following to the package.json:

   "devEngines": {
     "runtime": {
       "name": "node",
       "version": "22.22.0",
       "onFail": "download"
     }
   }

3. The output from vp env current is:

   VITE+ - The Unified Toolchain for the Web
   
   Environment:
     Version       22.22.0
     Source        devEngines.runtime
     Source Path   ~/ps/test/package.json
     Project Root  ~/ps/test
   
   Tool Paths:
     node  ~/.vite-plus/js_runtime/node/22.22.0/bin/node
     npm   ~/.vite-plus/js_runtime/node/22.22.0/bin/npm
     npx   ~/.vite-plus/js_runtime/node/22.22.0/bin/npx
   

   which is expected ✅

4. The output from node --version is:

   v24.18.0

   which is wrong ❌

Note that if instead of manually adding devEngines.runtime I do vp env pin 22.22.0 then both vp env current and node --version report the same version (22.22.0).

System Info

vp env current

VITE+ - The Unified Toolchain for the Web

Environment:
  Version  24.18.0
  Source   lts

Tool Paths:
  node  ~/.vite-plus/js_runtime/node/24.18.0/bin/node
  npm   ~/.vite-plus/js_runtime/node/24.18.0/bin/npm
  npx   ~/.vite-plus/js_runtime/node/24.18.0/bin/npx

vp --version

VITE+ - The Unified Toolchain for the Web

vp v0.2.1

Local vite-plus:
  vite-plus  Not found

Tools:
  vite             Not found
  rolldown         Not found
  vitest           Not found
  oxfmt            Not found
  oxlint           Not found
  oxlint-tsgolint  Not found
  tsdown           Not found

Environment:
  Package manager  Not found
  Node.js          v24.18.0

Used Package Manager

npm

Validations

• Read the Contributing Guidelines.
• Check that there isn't already an issue for the same bug.
• Confirm this is a Vite+ issue and not an upstream issue (Vite, Vitest, tsdown, Rolldown, or Oxc).
• The provided reproduction is a minimal reproducible example.