打包脚本修改为在fvm控制环境下打包

tool/_build.dart

@@ -3,8 +3,9 @@ part of './grind.dart';
 @Task('打包Android项目')
 buildApk() async {
   await runAsync(
-    'flutter',
+    'fvm',
     arguments: [
+      'flutter',
       'build',
       'apk',
       '--target-platform=android-arm64',
@@ -24,8 +25,9 @@ buildApk() async {
 @Task('打包Android项目')
 buildApkDev() async {
   await runAsync(
-    'flutter',
+    'fvm',
     arguments: [
+      'flutter',
       'build',
       'apk',
       '--target-platform=android-arm64',
@@ -44,8 +46,9 @@ buildApkDev() async {
 @Task('打包iOS项目')
 buildIos() async {
   await runAsync(
-    'flutter',
+    'fvm',
     arguments: [
+      'flutter'
       'build',
       'ios',
       '--dart-define',