feat: make the non shortcode way a conditional so that incremental updates can happen

Author: SayakMukhopadhyay

layouts/index.html

@@ -1,7 +1,11 @@
 {{ define "main" }}
+{{ if .HasShortcode "site-searchbar" }}
+  {{ warnf "The homepage of the language %s is using a deprecated shortcode site-searchbar. Please remove the shortcode. No other step is needed." .Lang }}
+{{ else }}
 <div class="col-sm-6 col-md-6 col-lg-6 mx-auto py-3">
   {{partial "search-input" .}}
 </div>
+{{ end }}
 {{ .Content }}
 <section id="cncf">
     <div class="main-section">