test(desktop): stabilize smoke coverage under load

Signed-off-by: loganj <loganj@squareup.com>

.github/workflows/ci.yml

@@ -234,7 +234,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        shard: [1, 2, 3, 4]
+        shard: [1, 2, 3, 4, 5, 6, 7, 8]
     permissions:
       contents: read
     steps:
@@ -274,7 +274,7 @@ jobs:
       - name: Desktop E2E build
         run: pnpm -C desktop build:e2e
       - name: Desktop smoke e2e
-        run: cd desktop && pnpm exec playwright test --project=smoke --shard=${{ matrix.shard }}/4
+        run: cd desktop && pnpm exec playwright test --project=smoke --shard=${{ matrix.shard }}/8
       - name: Summarize flaky tests
         if: ${{ !cancelled() }}
         run: node scripts/summarize-flaky-tests.mjs playwright-report.json "Desktop Smoke E2E (${{ matrix.shard }})"