Remove pnpm-version from CI workflow

Remove the pinned pnpm-version ("10") from .github/workflows/ci.yaml. The reusable plugin-ci workflow still runs with node-version 24 and ui-path "."; dropping pnpm-version avoids redundant pinning and allows the reusable workflow or environment to determine the pnpm version.

Author: ruibaby

.github/workflows/ci.yaml

@@ -13,5 +13,4 @@ jobs:
     uses: halo-sigs/reusable-workflows/.github/workflows/plugin-ci.yaml@v4
     with:
       node-version: "24"
-      pnpm-version: "10"
       ui-path: "."