[CP] have Java.version return null if java --version fails or cannot be run (flutter#139698)

cherry-picks changes from flutter#139614 onto the stable channel

Author: andrewkolos

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

@@ -136,13 +136,18 @@ class Java {
   /// Returns the version of java in the format \d(.\d)+(.\d)+
   /// Returns null if version could not be determined.
   late final Version? version = (() {
+    if (!canRun()) {
+      return null;
+    }
+
     final RunResult result = _processUtils.runSync(
       <String>[binaryPath, '--version'],
       environment: environment,
     );
     if (result.exitCode != 0) {
       _logger.printTrace('java --version failed: exitCode: ${result.exitCode}'
         ' stdout: ${result.stdout} stderr: ${result.stderr}');
+      return null;
     }
     final String rawVersionOutput = result.stdout;
     final List<String> versionLines = rawVersionOutput.split('\n');

packages/flutter_tools/test/general.shard/android/java_test.dart

@@ -183,7 +183,7 @@ OpenJDK 64-Bit Server VM Zulu19.32+15-CA (build 19.0.2+7, mixed mode, sharing)
       });
     });
 
-    group('getVersionString', () {
+    group('version', () {
       late Java java;
 
       setUp(() {
@@ -208,6 +208,23 @@ OpenJDK 64-Bit Server VM Zulu19.32+15-CA (build 19.0.2+7, mixed mode, sharing)
         );
       }
 
+      testWithoutContext('is null when java binary cannot be run', () async {
+        addJavaVersionCommand('');
+        processManager.excludedExecutables.add('java');
+
+        expect(java.version, null);
+      });
+
+      testWithoutContext('is null when java --version returns a non-zero exit code', () async {
+        processManager.addCommand(
+          FakeCommand(
+            command: <String>[java.binaryPath, '--version'],
+            exitCode: 1,
+          ),
+        );
+        expect(java.version, null);
+      });
+
       testWithoutContext('parses jdk 8', () {
         addJavaVersionCommand('''
 java version "1.8.0_202"