chore(winboll): 改造winboll模块适配API 26-30并兼容Java 7

- 调整minSdkVersion从23到26，符合API 26-30适配范围要求
- 修复PatternLockActivity.java中3处lambda表达式，
  改为Java 7兼容的匿名内部类形式
- 保持Gradle插件7.2.1、compileSdkVersion 30、
  targetSdkVersion 30及Java 11编译配置不变

Modified files:
- winboll/build.gradle
- winboll/build.properties
- winboll/src/main/java/cc/winboll/studio/winboll/activities/PatternLockActivity.java

winboll/src/main/java/cc/winboll/studio/winboll/activities/PatternLockActivity.java

@@ -65,7 +65,12 @@ public class PatternLockActivity extends BaseWinBoLLActivity {
         setSupportActionBar(toolbar);
         getSupportActionBar().setSubtitle(TAG);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
-        toolbar.setNavigationOnClickListener(v -> finish());
+        toolbar.setNavigationOnClickListener(new android.view.View.OnClickListener() {
+            @Override
+            public void onClick(android.view.View v) {
+                finish();
+            }
+        });
 
         mContainer = findViewById(R.id.container);
         mPatternView = new PatternView(this);
@@ -111,12 +116,15 @@ public class PatternLockActivity extends BaseWinBoLLActivity {
     private void showErrorState() {
         mIsInErrorState = true;
         invalidatePattern();
-        mHandler.postDelayed(() -> {
-            mIsInErrorState = false;
-            SharedPreferences prefs = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
-            prefs.edit().putBoolean(KEY_ERROR_STATE, false).apply();
-            invalidatePattern();
-            if (mPatternView != null) mPatternView.invalidate();
+        mHandler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                mIsInErrorState = false;
+                SharedPreferences prefs = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
+                prefs.edit().putBoolean(KEY_ERROR_STATE, false).apply();
+                invalidatePattern();
+                if (mPatternView != null) mPatternView.invalidate();
+            }
         }, PATTERN_ERROR_DURATION);
     }
 
@@ -138,7 +146,12 @@ public class PatternLockActivity extends BaseWinBoLLActivity {
         android.app.AlertDialog alertDialog = new android.app.AlertDialog.Builder(this)
             .setTitle("设置成功")
             .setMessage("图案密码已设置成功")
-            .setPositiveButton("确定", (dialog, which) -> finish())
+            .setPositiveButton("确定", new android.content.DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(android.content.DialogInterface dialog, int which) {
+                    finish();
+                }
+            })
             .setCancelable(false)
             .create();
         alertDialog.show();