fix(inputs): ensure the type has '' for mergeInputs

libs/ngxtension/inject-inputs/src/lib/merge-inputs.ts

@@ -3,11 +3,11 @@
  */
 export function mergeInputs<TInputs extends object>(
 	defaultValue: TInputs = {} as TInputs,
-) {
+): (value: '' | Partial<TInputs>) => TInputs {
 	return (value: '' | Partial<TInputs>) => {
 		// NOTE: if the directive is used as `<div directive></div>` without binding syntax
 		// then the bound value is `''` in which case we'll return the `defaultValue` for the input
 		if (value === '') return defaultValue;
-		return { ...defaultValue, ...value } as TInputs;
+		return { ...defaultValue, ...value };
 	};
 }