如何在属于formArray的禁用输入字段中显示逗号？

<form [formGroup]="myForm">
  <div formArrayName="myArray">
    <div *ngFor="let control of myArray.controls; let i=index">
      <input [formControlName]="i" [disabled]="true" />
      <span *ngIf="i < myArray.controls.length - 1">,</span>
    </div>
  </div>
</form>

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormBuilder, FormArray } from '@angular/forms';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponentComponent implements OnInit {
  myForm: FormGroup;

  constructor(private fb: FormBuilder) { }

  ngOnInit() {
    this.myForm = this.fb.group({
      myArray: this.fb.array([])
    });

    // 添加禁用的输入字段到formArray中
    const disabledValues = ['Value 1', 'Value 2', 'Value 3'];
    disabledValues.forEach(value => {
      this.myArray.push(this.fb.control({ value: value, disabled: true }));
    });
  }

  get myArray(): FormArray {
    return this.myForm.get('myArray') as FormArray;
  }
}