Guard against API 22 (flutter#51167)

This was introduced in flutter#51070 - my grepping for `LOLLIPOP` was too aggressive, and apparently the linter didn't catch this. I think it's just a bug in the linter. Fixes b/327717572, because Google internal tests caught this.
gspencergoog · Mar 4, 2024 · 54540a0 · 54540a0
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diff --git a/shell/platform/android/io/flutter/view/AccessibilityBridge.java b/shell/platform/android/io/flutter/view/AccessibilityBridge.java
@@ -763,7 +763,7 @@ public AccessibilityNodeInfo createAccessibilityNodeInfo(int virtualViewId) {
       result.setParent(rootAccessibilityView);
     }
 
-    if (semanticsNode.previousNodeId != -1) {
+    if (semanticsNode.previousNodeId != -1 && Build.VERSION.SDK_INT >= 22) {
       result.setTraversalAfter(rootAccessibilityView, semanticsNode.previousNodeId);
     }
 

diff --git a/tools/android_lint/.gitignore b/tools/android_lint/.gitignore
@@ -1 +1,3 @@
 lint_report/
+# autogenerated by the tool, run in CI.
+project.xml
diff --git a/tools/android_lint/project.xml b/tools/android_lint/project.xml