added explicit readonly and disabled props to MultipleValueInput

ui/src/components/base/MultipleValueInput.svelte

@@ -3,6 +3,8 @@
 
     export let value = [];
     export let separator = ",";
+    export let readonly = null;
+    export let disabled = null;
 
     $: valueStr = (value || []).join(", ");
 </script>
@@ -10,6 +12,8 @@
 <input
     type={$$restProps.type || "text"}
     value={valueStr}
+    {disabled}
+    {readonly}
     on:input={(e) => {
         value = CommonHelper.splitNonEmpty(e.target.value, separator);
     }}