Fix Foundry Java hosted agent fixture

Use Double literals for hosted agent CPU and memory options so the generated Java DTO setters compile.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: davidfowl

tests/PolyglotAppHosts/Aspire.Hosting.Foundry/Java/AppHost.java

@@ -109,8 +109,8 @@ void main() throws Exception {
 
         var hostedAgentOptions = new HostedAgentOptions();
         hostedAgentOptions.setDescription("Validation hosted agent");
-        hostedAgentOptions.setCpu(1);
-        hostedAgentOptions.setMemory(2);
+        hostedAgentOptions.setCpu(1.0);
+        hostedAgentOptions.setMemory(2.0);
         hostedAgentOptions.setMetadata(Map.of("scenario", "validation"));
         hostedAgentOptions.setEnvironmentVariables(Map.of("VALIDATION_MODE", "true"));
         hostedAgent.asHostedAgent(project, hostedAgentOptions);