fix(forms): expose ControlConfig in public API (#46594)

This commit exposes the ControlConfig as a public API, so that the symbol can be used in applications.

PR Close #46594

goldens/public-api/forms/index.md

@@ -175,6 +175,9 @@ export class CheckboxRequiredValidator extends RequiredValidator {
 // @public
 export const COMPOSITION_BUFFER_MODE: InjectionToken<boolean>;
 
+// @public
+export type ControlConfig<T> = [T | FormControlState<T>, (ValidatorFn | (ValidatorFn[]))?, (AsyncValidatorFn | AsyncValidatorFn[])?];
+
 // @public
 export abstract class ControlContainer extends AbstractControlDirective {
     get formDirective(): Form | null;

packages/forms/src/forms.ts

@@ -41,7 +41,7 @@ export {FormArrayName, FormGroupName} from './directives/reactive_directives/for
 export {NgSelectOption, SelectControlValueAccessor} from './directives/select_control_value_accessor';
 export {SelectMultipleControlValueAccessor, ɵNgSelectMultipleOption} from './directives/select_multiple_control_value_accessor';
 export {AsyncValidator, AsyncValidatorFn, CheckboxRequiredValidator, EmailValidator, MaxLengthValidator, MaxValidator, MinLengthValidator, MinValidator, PatternValidator, RequiredValidator, ValidationErrors, Validator, ValidatorFn} from './directives/validators';
-export {FormBuilder, NonNullableFormBuilder, UntypedFormBuilder, ɵElement} from './form_builder';
+export {ControlConfig, FormBuilder, NonNullableFormBuilder, UntypedFormBuilder, ɵElement} from './form_builder';
 export {AbstractControl, AbstractControlOptions, FormControlStatus, ɵCoerceStrArrToNumArr, ɵGetProperty, ɵNavigate, ɵRawValue, ɵTokenize, ɵTypedOrUntyped, ɵValue, ɵWriteable} from './model/abstract_model';
 export {FormArray, UntypedFormArray, ɵFormArrayRawValue, ɵFormArrayValue} from './model/form_array';
 export {FormControl, FormControlOptions, FormControlState, UntypedFormControl, ɵFormControlCtor} from './model/form_control';