feat(v4): Compose new conversation without multiple clicks (#10545)

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Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/dashboard/i18n/locale/en/components.json

@@ -12,7 +12,8 @@
   },
   "DROPDOWN_MENU": {
     "SEARCH_PLACEHOLDER": "Search...",
-    "EMPTY_STATE": "No results found."
+    "EMPTY_STATE": "No results found.",
+    "SEARCHING": "Searching..."
   },
   "DIALOG": {
     "BUTTONS": {