Normalize channel name before suggesting it as item name

Normalizing allows for channel names to contain subscript characters like in units; CO2.

Fixes openhab/openhab-addons#13909

Signed-off-by: Hilbrand Bouwkamp <hilbrand@h72.nl>

bundles/org.openhab.ui/web/src/pages/settings/things/link/link-add.vue

@@ -195,7 +195,7 @@ export default {
       this.loadProfileTypes(this.channel)
       let newItemName = diacritic.clean(this.thing.label).replace(/[^0-9a-z]/gi, '')
       newItemName += '_'
-      newItemName += (this.channel.label) ? diacritic.clean(this.channel.label).replace(/[^0-9a-z]/gi, '') : diacritic.clean(this.channelType.label).replace(/[^0-9a-z]/gi, '')
+      newItemName += diacritic.clean((this.channel.label || this.channelType.label).normalize`NFKD`).replace(/[^0-9a-z]/gi, '')
       const defaultTags = (this.channel.defaultTags.length > 0) ? this.channel.defaultTags : this.channelType.tags
       this.$set(this, 'newItem', {
         name: newItemName,