feat: Align FormControl implementation with latest from Backoffice Validation (#788)

* default-to-undefined

* align with newest code from backoffice

* ts ignorer for updated

* mark as @Protected

* fix form control mixin

* correct FormControlMixin implementation

* remove null, so it becomes undefined

* make default value optional

* compose types for value type

Author: nielslyngsoe

package-lock.json

@@ -127,7 +127,7 @@
     "storybook": "^7.6.14",
     "tsc-files": "1.1.4",
     "turbo": "1.13.2",
-    "typescript": "5.2.2",
+    "typescript": "5.4.5",
     "vite": "5.0.13",
     "vite-plugin-turbosnap": "^1.0.3",
     "vite-tsconfig-paths": "4.3.2",

package.json

@@ -3,7 +3,7 @@ import { UUIEvent } from './UUIEvent';
 
 export class UUIFormControlEvent extends UUIEvent<
   {},
-  UUIFormControlMixinInterface<unknown, unknown>
+  UUIFormControlMixinInterface<unknown>
 > {
   constructor(evName: string, eventInit: any | null = {}) {
     super(evName, {