fix: 修复 NDK 缓存不是绝对路径的问题

.github/workflows/android_ci.yml

@@ -21,13 +21,16 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: set up JDK 21
+      - name: Set up JDK 21
         uses: actions/setup-java@v5.2.0
         with:
           java-version: '21'
           distribution: 'temurin'
           cache: gradle
 
+      - name: Export ANDROID_HOME to env
+        run: echo "ANDROID_HOME=$ANDROID_HOME" >> "$GITHUB_ENV"
+
       - name: Cache NDK
         id: cache-ndk
         uses: actions/cache@v5.0.3
@@ -65,4 +68,4 @@ jobs:
         uses: actions/upload-artifact@v6.0.0
         with:
           name: Release
-          path: ${{ github.workspace }}/app/build/outputs/apk/release
+          path: ${{ github.workspace }}/app/build/outputs/apk/release