Fix overwriting default project model

.changelog/2250.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ui: fix leaky project repository settings being reused when creating a new project
+```

ui/app/components/app-form/project-repository-settings.ts

@@ -56,10 +56,12 @@ export default class AppFormProjectRepositorySettings extends Component<ProjectS
  @tracked project: Project.AsObject;
  @tracked authCase: number;
  @tracked serverHcl: boolean;
+ defaultProject: Project.AsObject;
 
  constructor(owner: unknown, args: ProjectSettingsArgs) {
  super(owner, args);
- this.project = JSON.parse(JSON.stringify(DEFAULT_PROJECT_MODEL)) as Project.AsObject; // to ensure we're doing a deep copy
+ this.defaultProject = JSON.parse(JSON.stringify(DEFAULT_PROJECT_MODEL)) as Project.AsObject; // to ensure we're doing a deep copy
+ this.project = this.defaultProject;
  let { project } = this.args;
  this.populateExistingFields(project, this.project);
  this.authCase = 4;
@@ -128,7 +130,7 @@ export default class AppFormProjectRepositorySettings extends Component<ProjectS
  populateExistingFields(projectFromArgs: Project.AsObject, currentModel: Project.AsObject): void {
  for (let [key, value] of Object.entries(projectFromArgs)) {
  if (isEmpty(value)) {
- currentModel[key] = DEFAULT_PROJECT_MODEL[key];
+ currentModel[key] = this.defaultProject[key];
  continue;
  }