ci: build server before desktop tests

f0d96f8e added packages/desktop/src/daemon/daemon-manager.test.ts,
which calls vi.mock("@getpaseo/server", ...). Vite's module
resolution still needs to find the package's main entry, so
desktop CI must build the server (and its dependency chain) before
running the tests. Mirrors the prebuild steps used by typecheck,
server-tests, and playwright.

.github/workflows/ci.yml

@@ -155,6 +155,15 @@ jobs:
       - name: Install dependencies
         run: npm install
 
+      - name: Build highlight dependency
+        run: npm run build --workspace=@getpaseo/highlight
+
+      - name: Build relay dependency
+        run: npm run build --workspace=@getpaseo/relay
+
+      - name: Build server dependency
+        run: npm run build --workspace=@getpaseo/server
+
       - name: Run desktop tests
         run: npm run test --workspace=@getpaseo/desktop