Remove 'browserName' capability from stereotype when using RelaySession (#14247)

* Remove 'browserName' capability from stereotype. We expect it to be present is SessionRequest

* Only remove 'browserName' when 'appium:app' is present

* Formatting file

---------

Co-authored-by: Diego Molina <[email protected]>
Co-authored-by: Diego Molina <[email protected]>

Author: bhecquet

java/src/org/openqa/selenium/grid/node/relay/RelaySessionFactory.java

@@ -40,6 +40,7 @@
 import java.util.logging.Logger;
 import org.openqa.selenium.Capabilities;
 import org.openqa.selenium.ImmutableCapabilities;
+import org.openqa.selenium.MutableCapabilities;
 import org.openqa.selenium.SessionNotCreatedException;
 import org.openqa.selenium.WebDriverException;
 import org.openqa.selenium.grid.data.CreateSessionRequest;
@@ -49,6 +50,7 @@
 import org.openqa.selenium.internal.Debug;
 import org.openqa.selenium.internal.Either;
 import org.openqa.selenium.internal.Require;
+import org.openqa.selenium.remote.CapabilityType;
 import org.openqa.selenium.remote.Command;
 import org.openqa.selenium.remote.Dialect;
 import org.openqa.selenium.remote.DriverCommand;
@@ -146,7 +148,16 @@ public Either<WebDriverException, ActiveSession> apply(CreateSessionRequest sess
           new SessionNotCreatedException(
               "New session request capabilities do not " + "match the stereotype."));
     }
-    capabilities = capabilities.merge(stereotype);
+
+    // remove browserName capability if 'appium:app' is present as it breaks appium tests when app
+    // is provided
+    // they are mutually exclusive
+    MutableCapabilities filteredStereotype = new MutableCapabilities(stereotype);
+    if (capabilities.getCapability("appium:app") != null) {
+      filteredStereotype.setCapability(CapabilityType.BROWSER_NAME, (String) null);
+    }
+
+    capabilities = capabilities.merge(filteredStereotype);
     LOG.info("Starting session for " + capabilities);
 
     try (Span span = tracer.getCurrentContext().createSpan("relay_session_factory.apply")) {