ci: re-enable restoring inexact yarn cache

Author: djcsdy

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           path: ~/.yarn/berry/cache
           key: ${{runner.os}}-node${{matrix.node-version}}-yarn-${{hashFiles('**/yarn.lock')}}
-      #          restore-keys: ${{runner.os}}-node${{matrix.node-version}}-yarn-
+          restore-keys: ${{runner.os}}-node${{matrix.node-version}}-yarn-
       - name: Set up Node.js v${{matrix.node-version}}
         uses: actions/setup-node@v4
         with: