perf(ci): reduce build memory and parallelism settings

Lower memory allocation from 8GB to 4GB and reduce worker counts across
Gradle, Node, and CMake to minimize resource consumption during CI builds.
Remove Gradle caching to simplify workflow configuration.

.gitea/workflows/build.yml

@@ -232,7 +232,7 @@ jobs:
           cat > gradle.properties << 'PROPS_EOF'
           org.gradle.daemon=false
           org.gradle.parallel=false
-          org.gradle.configureondemand=true
+          org.gradle.configureondemand=false
           org.gradle.workers.max=2
           org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=512m -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=0 -XX:ReservedCodeCacheSize=256m -XX:+HeapDumpOnOutOfMemoryError
           android.enableJetifier=false