bug: ion-checkbox generated HTML markup has an accessibility issue on Lighthouse Audit

[albernaz]

Bug Report

ion-checkbox generated HTML markup has an accessibility issue on Lighthouse Audit.

<ion-checkbox _ngcontent-ila-c3="" aria-required="true" color="warning" 
formcontrolname="privacy" id="privacy" name="privacy" slot="start" ng-reflect-color="warning"
 ng-reflect-name="privacy" class="ng-untouched ng-pristine ng-invalid ion-untouched ion-pristine ion-invalid ion-color ion-color-warning md in-item interactive hydrated" role="checkbox" 
aria-checked="false" aria-labelledby="ion-cb-0-lbl"><input type="hidden" class="aux-input" 
name="privacy" value=""></ion-checkbox>

<svg class="checkbox-icon" viewBox="0 0 24 24"><path d="M1.73,12.91 8.1,19.28 22.79,4.59"></path></svg>

<button type="button"></button>

Ionic version:

[x] 5

Current behavior:

Lighthouse Audit: Buttons do not have an accessible name
Failing Elements
button

Expected behavior:

Should pass Lighthouse Audit Test.

Steps to reproduce:

Related code:

insert short code snippets here

Other information:

https://github.com/ionic-team/ionic/blob/master/core/src/components/checkbox/checkbox.tsx line 168-169
Just add line bellow to the Button HTML tag:
aria-labelledby={labelId}

This must fix it.

Ionic info:

Ionic:

   Ionic CLI                     : 5.4.15 (C:\Users\Fabiano Lemos\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework               : @ionic/angular 5.0.0
   @angular-devkit/build-angular : 0.803.25
   @angular-devkit/schematics    : 8.1.3
   @angular/cli                  : 8.3.25
   @ionic/angular-toolkit        : 2.1.1

Utility:

   cordova-res : not installed
   native-run  : not installed

System:

   NodeJS : v12.13.1 (C:\Program Files\nodejs\node.exe)
   npm    : 6.13.7
   OS     : Windows 10

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.