Fix configuration source in empty in slot creation dialog

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-appservice/src/main/java/com/microsoft/azure/toolkit/intellij/legacy/function/runner/deploy/ui/components/DeploymentSlotComboBox.java

@@ -70,7 +70,7 @@ protected List<ExtendableTextComponent.Extension> getExtensions() {
 
     private void createResource() {
         final List<DeploymentSlotConfig> existingSlots = this.getItems().stream()
-                .filter(config -> StringUtils.isNoneBlank(config.getConfigurationSource()))
+                .filter(config -> !config.isNewCreate())
                 .collect(Collectors.toList());
         final DeploymentSlotCreationDialog dialog = new DeploymentSlotCreationDialog(project, existingSlots);
         dialog.setOkActionListener(config -> {
@@ -92,7 +92,7 @@ protected List<? extends DeploymentSlotConfig> loadItems() throws Exception {
             return Collections.emptyList();
         }
         final List<DeploymentSlotConfig> result = module.list().stream().map(slot ->
-                DeploymentSlotConfig.builder().name(slot.getName()).build()).collect(Collectors.toList());
+                DeploymentSlotConfig.builder().name(slot.getName()).newCreate(false).build()).collect(Collectors.toList());
         this.draftItems.stream().filter(config -> !result.contains(config)).forEach(result::add);
         return result;
     }

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-appservice/src/main/java/com/microsoft/azure/toolkit/intellij/legacy/function/runner/deploy/ui/components/DeploymentSlotCreationDialog.java

@@ -69,6 +69,7 @@ public DeploymentSlotConfig getValue() {
         return DeploymentSlotConfig.builder()
                 .name(txtName.getValue())
                 .configurationSource(source)
+                .newCreate(true)
                 .build();
     }