Add nullability annotations to RemoteExecuteMethod class

Author: iampopovich

java/src/org/openqa/selenium/remote/RemoteExecuteMethod.java

@@ -18,10 +18,12 @@
 package org.openqa.selenium.remote;
 
 import java.util.Map;
+import org.jspecify.annotations.NullMarked;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WrapsDriver;
 import org.openqa.selenium.internal.Require;
 
+@NullMarked
 public class RemoteExecuteMethod implements ExecuteMethod, WrapsDriver {
   private final RemoteWebDriver driver;