chore: update interpolation syntax for i18n files (#10198)

There were two warnings showing up on new teams page

1. `errorMessage` prop was getting invalid value, this was because were
short circuting the error message using `&&`, fixed it by using ternary
operator
2. `vue-i18n` has deprecated [rails
syntax](https://vue-i18n.intlify.dev/guide/essentials/syntax#rails-i18n-format),
fixed that warning by removing `%` before `{}` for interpolation

> Note: the `vue-i18n` deprecation needs to be handled, but we can do it
later

app/javascript/dashboard/i18n/locale/sr/search.json

@@ -12,8 +12,8 @@
       "MESSAGES": "Poruke"
     },
     "SEARCHING_DATA": "Searching",
-    "EMPTY_STATE": "No %{item} found for query '%{query}'",
-    "EMPTY_STATE_FULL": "No results found for query '%{query}'",
+    "EMPTY_STATE": "No {item} found for query '{query}'",
+    "EMPTY_STATE_FULL": "No results found for query '{query}'",
     "PLACEHOLDER_KEYBINDING": "/ to focus",
     "INPUT_PLACEHOLDER": "Type 3 or more characters to search",
     "EMPTY_STATE_DEFAULT": "Search by conversation id, email, phone number, messages for better search results. ",