Input Document: Moved constructor code

to `connectedCallback`, as attribute properties for configuration
values, such as min/max, haven't been set at the point of execution.

src/Umbraco.Web.UI.Client/src/packages/documents/documents/components/input-document/input-document.element.ts

@@ -73,6 +73,10 @@ export class UmbInputDocumentElement extends FormControlMixin(UmbLitElement) {
 
 	constructor() {
 		super();
+	}
+
+	connectedCallback() {
+		super.connectedCallback();
 
 		this.addValidator(
 			'rangeUnderflow',