fix: copy gradle wrapper from tools to platform root dir (apache#1781)

Author: erisu

lib/builders/ProjectBuilder.js

@@ -18,6 +18,7 @@
 */
 
 const fs = require('node:fs');
+const fsp = require('node:fs/promises');
 const path = require('node:path');
 const execa = require('execa');
 const glob = require('fast-glob');
@@ -289,6 +290,10 @@ class ProjectBuilder {
             .then(function () {
                 events.emit('verbose', `Using Gradle: ${config.GRADLE_VERSION}`);
                 return self.installGradleWrapper(config.GRADLE_VERSION);
+            }).then(async function () {
+                await fsp.cp(path.join(self.root, 'tools', 'gradle'), path.join(self.root, 'gradle'), { recursive: true, force: true });
+                await fsp.cp(path.join(self.root, 'tools', 'gradlew'), path.join(self.root, 'gradlew'), { recursive: true, force: true });
+                await fsp.cp(path.join(self.root, 'tools', 'gradlew.bat'), path.join(self.root, 'gradlew.bat'), { recursive: true, force: true });
             }).then(function () {
                 return self.prepBuildFiles();
             }).then(() => {