Add missing fallback texts

Author: BatJan

src/Umbraco.Web.UI.Client/src/views/common/infiniteeditors/compositions/overlays/confirmremove.html

@@ -1,9 +1,10 @@
 <div>
 
     <div class="umb-alert umb-alert--warning mb2">
-        <localize key="contentTypeEditor_compositionRemoveWarning"></localize>
+        <localize key="contentTypeEditor_compositionRemoveWarning">Removing a composition will delete all the associated property data. Once you save the Document Type there's no way
+        back.</localize>
     </div>
 
-    <localize key="defaultdialogs_confirmSure"></localize>
+    <localize key="defaultdialogs_confirmSure">Are you sure?</localize>
 
 </div>