[Bug]: programmatically expand/collapse resizable broken

[liyasthomas]

Reproduction

https://stackblitz.com/edit/vitejs-vite-7lpxz6am?file=src%2FApp.vue

Describe the bug

I’m unable to programmatically expand or collapse a resizable component.

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 20.19.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.8.2 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm

Contributes

• [ ] I am willing to submit a PR to fix this issue
• [ ] I am willing to submit a PR with failing tests