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/nl/search.json

@@ -12,8 +12,8 @@
       "MESSAGES": "Berichten"
     },
     "SEARCHING_DATA": "Zoeken",
-    "EMPTY_STATE": "Geen %{item} gevonden voor query '%{query}'",
-    "EMPTY_STATE_FULL": "Geen resultaten gevonden voor query '%{query}'",
+    "EMPTY_STATE": "Geen {item} gevonden voor query '{query}'",
+    "EMPTY_STATE_FULL": "Geen resultaten gevonden voor query '{query}'",
     "PLACEHOLDER_KEYBINDING": "/ om te focussen",
     "INPUT_PLACEHOLDER": "Voer 3 of meer tekens in om te zoeken",
     "EMPTY_STATE_DEFAULT": "Zoeken op gesprek id, e-mail, telefoonnummer, berichten voor betere zoekresultaten. ",