When searching for the JDK bundled with an unrecognized version of Android...

When searching for the JDK bundled with an unrecognized version of Android Studio, assume the version to be the latest (#125247)

Fixes #125246 by restoring the intended behavior of #101862. That is, when searching for a JDK and we encounter an Android Studio version we don't recognize, assume it to be the latest version `flutter` is aware of.

Also does some light refactoring in the tests, like using test objects instead of referencing `globals`.

packages/flutter_tools/lib/src/android/android_studio.dart

@@ -162,6 +162,9 @@ class AndroidStudio {
   bool _isValid = false;
   final List<String> _validationMessages = <String>[];
 
+  /// The path of the JDK bundled with Android Studio.
+  ///
+  /// This will be null if the bundled JDK could not be found or run.
   String? get javaPath => _javaPath;
 
   bool get isValid => _isValid;
@@ -487,16 +490,17 @@ the configured path by running this command: flutter config --android-studio-dir
     if (globals.platform.isMacOS) {
       if (version != null && version!.major < 2020) {
         javaPath = globals.fs.path.join(directory, 'jre', 'jdk', 'Contents', 'Home');
-      } else if (version != null && version!.major == 2022) {
-        javaPath = globals.fs.path.join(directory, 'jbr', 'Contents', 'Home');
-      } else {
+      } else if (version != null && version!.major < 2022) {
         javaPath = globals.fs.path.join(directory, 'jre', 'Contents', 'Home');
+      // See https://github.com/flutter/flutter/issues/125246 for more context.
+      } else {
+        javaPath = globals.fs.path.join(directory, 'jbr', 'Contents', 'Home');
       }
     } else {
-      if (version != null && version!.major == 2022) {
-        javaPath = globals.fs.path.join(directory, 'jbr');
-      } else {
+      if (version != null && version!.major < 2022) {
         javaPath = globals.fs.path.join(directory, 'jre');
+      } else {
+        javaPath = globals.fs.path.join(directory, 'jbr');
       }
     }
     final String javaExecutable = globals.fs.path.join(javaPath, 'bin', 'java');