Update src/components/NcThemeProvider/NcThemeProvider.vue

Co-authored-by: Grigorii K. Shartsev <me@shgk.me>
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

src/components/NcThemeProvider/NcThemeProvider.vue

@@ -150,7 +150,7 @@ const dataTheme = computed(() => {
 </script>
 
 <template>
-	<div v-bind="dataTheme">
+	<div :[`data-theme-${theme}`]="dataTheme">
 		<slot />
 	</div>
 </template>