Also make IntegerFieldRenderer experimental

Author: YannickMG

src/main/java/com/cleanroommc/modularui/widgets/textfield/IntegerFieldRenderer.java

@@ -1,11 +1,13 @@
 package com.cleanroommc.modularui.widgets.textfield;
 
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 
 import java.text.DecimalFormat;
 import java.util.List;
 import java.util.stream.Collectors;
 
+@ApiStatus.Experimental
 class IntegerFieldRenderer extends TextFieldRenderer {
     private static final DecimalFormat INTEGER_FIELD_FORMAT = new DecimalFormat("#");