chore: move has multiple calculation to computed

src/components/input/multiselect.vue

@@ -9,7 +9,7 @@
 		<div class="control" :class="{'is-loading': loading || localLoading}">
 			<div
 				class="input-wrapper input"
-				:class="{'has-multiple': multiple && Array.isArray(internalValue) && internalValue.length > 0}">
+				:class="{'has-multiple': hasMultiple}">
 				<template v-if="Array.isArray(internalValue)">
 					<template v-for="(item, key) in internalValue">
 						<slot name="tag" :item="item">
@@ -232,6 +232,9 @@ export default {
 
 			return this.searchResults
 		},
+		hasMultiple() {
+			return this.multiple && Array.isArray(this.internalValue) && this.internalValue.length > 0
+		},
 	},
 	methods: {
 		// Searching will be triggered with a 200ms delay to avoid searching on every keyup event.