Typescript ANGLE NumberValueAccessor表单控件值更改订阅两次

嗨，我遇到了一个非常奇怪的问题，表单组值更改为一个更改订阅了两次. 下面是一些代码片段，它们描述了我正在try 做的事情.不幸的是，由于一些连接，目前无法创建堆栈闪电战. 仅数字-输入组件html文件

<mat-form-field appearance="outline" class="bsl-form-field-input">
  <mat-label>{{ matLabel }}</mat-label>
  <input
    type="number"
    matInput
    [placeholder]="placeHolder"
    [formControl]="formControl"
    autocomplete="off"
    appNumbersOnly
  />
</mat-form-field>

仅数字-输入元件ts文件

import { Component, Input, OnDestroy, OnInit, forwardRef } from '@angular/core';
import {
  FormControl,
  NG_VALUE_ACCESSOR,
  NumberValueAccessor,
} from '@angular/forms';
import { Subject } from 'rxjs';

@Component({
  selector: 'app-numbers-only-input',
  templateUrl: './numbers-only-input.component.html',
  styleUrls: ['./numbers-only-input.component.scss'],
  providers: [
    {
      provide: NG_VALUE_ACCESSOR,
      useExisting: forwardRef(() => NumbersOnlyInputComponent),
      multi: true,
    },
  ],
})
export class NumbersOnlyInputComponent
  extends NumberValueAccessor
  implements OnDestroy, OnInit
{
  @Input()
  formControl: FormControl;
  @Input()
  matLabel: string;
  @Input()
  placeHolder: string;

  destroySubject = new Subject<void>();


  ngOnDestroy(): void {
    this.destroySubject.next();
    this.destroySubject.complete();
  }

  ngOnInit(): void {
    this.formControl.valueChanges.subscribe(value=>console.log(value))
  }
}

仅数字指令文件，它只是阻止输入除数字之外的任何字符，并仅允许为有效数字粘贴值.

import { Directive, HostListener } from '@angular/core';

@Directive({
  selector: '[appNumbersOnly]',
})
export class NumbersOnlyDirective {
  regEx = '^[0-9]+$';

  // only numbers are allowed
  @HostListener('keypress', ['$event'])
  onKeyPress(event: KeyboardEvent) {
    return new RegExp(this.regEx).test(event.key);
  }

  // block paste for non numeric values
  @HostListener('paste', ['$event'])
  onPaste(event: ClipboardEvent) {
    const pastedString = event?.clipboardData?.getData('text/plain');
    if (pastedString && !Number.isNaN(+pastedString)) {
      return true;
    } else {
      return false;
    }
  }
}

anyone please help me to resolve this. here is my console