ci: fix yarn.lock consistency issues in formatting workflow

- Set exact yarn version (1.22.22) using corepack for consistency
- Use 'yarn install --frozen-lockfile' instead of plain 'yarn'
- Exclude yarn.lock from formatting diff check to prevent false failures
- Ensures consistent dependency resolution between local and CI environments

Resolves CI formatting failures caused by yarn version differences.

Author: DaMandal0rian

.github/workflows/check-formatting.yml

@@ -15,7 +15,11 @@ jobs:
         uses: actions/[email protected]
         with:
           node-version: 20
+      - name: Enable Corepack and set exact yarn version
+        run: |
+          corepack enable
+          yarn set version 1.22.22
       - name: Build and Format
-        run: yarn
+        run: yarn install --frozen-lockfile
       - name: Check Formatting
-        run: git diff --exit-code
+        run: git diff --exit-code -- ':!yarn.lock'