Update weather example remote

Author: tvallin

integrations/mcp/tests/imperative/src/main/java/io/helidon/integrations/mcp/tests/imperative/McpWeatherTool.java

@@ -64,6 +64,9 @@ public ToolContent process(McpParameters parameters) {
 					""", f.properties().event(), f.properties.areaDesc(), f.properties.severity(),
                             f.properties.description(), f.properties.instruction()))
                     .collect(Collectors.joining("\n"));
+            if (content.isBlank()) {
+                content = "There is no weather alert in this state" + state;
+            }
             return ToolContents.textContent(content);
         } catch (JsonProcessingException e) {
             throw new RuntimeException(e);