bug: no styling on disabled ion-select-option

[kelvindart]

Ionic version:
[x] 4.x

Current behavior:
If you add either a disabled attribute, or disabled="true" attribute to an ion-select-option, there is no styling to reflect this. The item cannot be selected, so the behaviour is correct. But there is no visible way to determine a disabled option.

N.b. this is not a problem when the ion-select's interface is set to popover (i.e. <ion-select interface="popover">...</ion-select>

Expected behavior:
For the ion-select-option to be greyed out or have some sort of visible sign if it is disabled.

Steps to reproduce:

1. Add the code snipped from "Related code" below to a new page.
2. Observe how a disabled ion-select-option looks the same as a non-disabled item.

Related code:

<ion-item>
  <ion-label>Statuses</ion-label>
  <ion-select id="status">
    <ion-select-option value="selected" selected>Selected</ion-select-option>
    <ion-select-option value="default">Default</ion-select-option>
    <ion-select-option value="disabled" disabled="true">Disabled</ion-select-option>
  </ion-select>
</ion-item>

Other information:
PR: #18545

Image of the issue:

Ionic info:

Ionic:

   ionic (Ionic CLI)             : 4.12.0 (/Users/kelvindart/.nvm/versions/node/v10.15.3/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.5.0
   @angular-devkit/build-angular : 0.13.9
   @angular-devkit/schematics    : 7.3.9
   @angular/cli                  : 7.3.9
   @ionic/angular-toolkit        : 1.5.1

System:

   NodeJS : v10.15.3 (/Users/kelvindart/.nvm/versions/node/v10.15.3/bin/node)
   npm    : 6.9.0
   OS     : macOS High Sierra

[brandyscarney]

Thank you for the issue! It seems this has been resolved in latest so I am going to close this: https://codepen.io/brandyscarney/pen/Baybgby

[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.