Finish converting all events to jspecify annotations

patches/api/Basic-PlayerProfile-API.patch

@@ -262,7 +262,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +/**
 + * Represents a property on a {@link PlayerProfile}
 + */
-+public class ProfileProperty {
++public final class ProfileProperty {
 +    private final String name;
 +    private final String value;
 +    private final String signature;