refactor(nginx): streamline default Nginx configuration and improve error handling

Updated the default Nginx configuration function to enhance clarity and maintainability. Removed unnecessary redirection logic and added explicit handling for 404 errors, ensuring a more robust error management strategy. This refactor simplifies the configuration while maintaining essential functionality, contributing to a cleaner and more efficient setup.

bootstrap/helpers/shared.php

@@ -4054,29 +4054,24 @@ function defaultNginxConfiguration(): string
 {
     return 'server {
     location / {
-        root   /usr/share/nginx/html;
-        index  index.html index.htm;
-        try_files $uri $uri.html $uri/index.html $uri/index.htm $uri/ /index.html /index.htm =404;
+        root /usr/share/nginx/html;
+        index index.html index.htm;
+        try_files $uri $uri.html $uri/index.html $uri/index.htm $uri/ =404;
     }
 
+    # Handle 404 errors
+    error_page 404 /404.html;
+    location = /404.html {
+        root /usr/share/nginx/html;
+        internal;
+    }
+
+    # Handle server errors (50x)
     error_page 500 502 503 504 /50x.html;
     location = /50x.html {
         root /usr/share/nginx/html;
-        try_files $uri @redirect_to_index;
         internal;
     }
-
-    error_page 404 = @handle_404;
-
-    location @handle_404 {
-        root /usr/share/nginx/html;
-        try_files /404.html @redirect_to_index;
-        internal;
-    }
-
-    location @redirect_to_index {
-        return 302 /;
-    }
 }';
 }