fix(ci): install every keyring platform binding before the prerelease compile (#2587)

The prerelease workflow compiles all six binary targets but installed only
the host platform's @napi-rs/keyring binding, so compile fails on the first
non-host target since #2565. Match the release workflow's install step.

Author: tejaskash

.github/workflows/prerelease.yml

@@ -27,7 +27,7 @@ jobs:
 
       - uses: oven-sh/setup-bun@v2
 
-      - run: bun install --frozen-lockfile
+      - run: bun install --frozen-lockfile --os="*" --cpu="*"
 
       - name: Set prerelease version
         run: |