[cmd, build] Fix wpiannotation dependencies on commandsv2 (#8279)

wpilibNewCommands/BUILD.bazel

@@ -104,9 +104,9 @@ wpilib_cc_static_library(
 wpilib_java_library(
     name = "wpilibNewCommands-java",
     srcs = glob(["src/main/java/**/*.java"]) + [":generated_java"],
+    exported_plugins = ["//javacPlugin:plugin"],
     maven_artifact_name = "wpilibNewCommands-java",
     maven_group_id = "edu.wpi.first.wpilibNewCommands",
-    exported_plugins = ["//javacPlugin:plugin"],
     plugins = ["//javacPlugin:plugin"],
     visibility = ["//visibility:public"],
     deps = [
@@ -148,6 +148,7 @@ wpilib_java_junit5_test(
         ":wpilibNewCommands-java",
         "//hal:hal-java",
         "//ntcore:ntcore-java",
+        "//wpiannotations",
         "//wpilibj:wpilibj-java",
         "//wpimath:wpimath-java",
         "//wpiunits:wpiunits-java",

wpilibNewCommands/build.gradle

@@ -25,6 +25,7 @@ dependencies {
     api project(':datalog')
     testImplementation 'org.mockito:mockito-core:4.1.0'
     annotationProcessor project(':javacPlugin')
+    testAnnotationProcessor project(':javacPlugin')
 }
 
 sourceSets.main.java.srcDir "${projectDir}/src/generated/main/java"

wpilibNewCommands/src/test/java/edu/wpi/first/wpilibj2/command/SingleCompositionTestBase.java

@@ -30,6 +30,7 @@ public abstract class SingleCompositionTestBase<T extends Command> extends Comma
   }
 
   @Test
+  @SuppressWarnings("NoDiscard")
   void commandInOtherCompositionTest() {
     var command = Commands.none();
     new WrapperCommand(command) {};