Fix some warnings in RunFlutterAction.java (flutter#7914)

@jwren fixing some warnings I am seeing as I'm opening files in the
project. I'm on JVM 23 so I'm not sure if that is why I'm seeing these
warnings, but please let me know if these are appropriate fixes. I just
applied the suggestions from the warning in the IDE.

Author: kenzieschmoll

flutter-idea/src/io/flutter/FlutterBundle.properties

@@ -11,7 +11,7 @@ app.restart.action.description=Restart the Flutter app
 app.restart.all.action.text=Flutter Hot Restart (All Devices)
 app.restart.all.action.description=Restart all running Flutter apps on all connected devices
 
-app.profile.action.text=Run in Flutter profile mode
+app.profile.action.text=Run in Flutter Profile Mode
 app.profile.config.action.text=Flutter Run ''{0}'' in Profile Mode
 app.profile.action.description=Run Flutter app in profile mode
 

flutter-idea/src/io/flutter/actions/RestartFlutterAppRetarget.java

@@ -8,7 +8,7 @@
 import com.intellij.openapi.actionSystem.ActionPlaces;
 
 /**
- * A keystroke or tool-bar invoked {@link RestartFlutterApp} action.
+ * A keystroke or toolbar invoked {@link RestartFlutterApp} action.
  */
 public class RestartFlutterAppRetarget extends FlutterRetargetAppAction {
   public RestartFlutterAppRetarget() {

flutter-idea/src/io/flutter/actions/RunFlutterAction.java

@@ -28,6 +28,7 @@
 import javax.swing.*;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 public abstract class RunFlutterAction extends AnAction {
   private final @NotNull String myDetailedTextKey;
@@ -62,6 +63,7 @@ public void actionPerformed(@NotNull AnActionEvent e) {
     }
 
     final SdkRunConfig sdkRunConfig = (SdkRunConfig)configuration.clone();
+    assert sdkRunConfig != null;
     final SdkFields fields = sdkRunConfig.getFields();
     final String additionalArgs = fields.getAdditionalArgs();
 
@@ -153,7 +155,8 @@ public static RunnerAndConfigurationSettings getRunConfigSettings(@Nullable AnAc
 
   @Nullable
   public static Executor getExecutor(@NotNull String executorId) {
-    for (Executor executor : Executor.EXECUTOR_EXTENSION_NAME.getExtensions()) {
+    for (Executor executor : Objects.requireNonNull(Executor.EXECUTOR_EXTENSION_NAME.getExtensions())) {
+      assert executor != null;
       if (executorId.equals(executor.getId())) {
         return executor;
       }