Rename JUnitTestRunner.main to JUnitTestRunner.run.

This is to avoid confusion with the standard Java main method.

PiperOrigin-RevId: 628476356

Author: j2objc-copybara

testing/junit_ext/src/java/com/google/j2objc/testing/JUnitTestRunner.java

@@ -107,7 +107,7 @@ public JUnitTestRunner(PrintStream out) {
     this.out = out;
   }
 
-  public static int main(String[] args) {
+  public static int run(String[] args) {
     // Create JUnit test runner.
     PrintStream nsLogOut = new PrintStream(new NSLogOutputStream(), true);
     JUnitTestRunner runner = new JUnitTestRunner(nsLogOut);

testing/junit_ext/src/objc/TestRunnerMain.m

@@ -41,7 +41,7 @@ @interface JUnitXCTestCase : XCTestCase
 @implementation JUnitXCTestCase
 
 - (void)testAll {
-  XCTAssertEqual(ComGoogleJ2objcTestingJUnitTestRunner_mainWithNSStringArray_(nil), 0);
+  XCTAssertEqual(ComGoogleJ2objcTestingJUnitTestRunner_runWithNSStringArray_(nil), 0);
 }
 
 @end