bug: material ion-refresher does not have a dark mode

[ycintre]

Bug Report

Ionic version:
[ ] 4.x
[x] 5.x

Current behavior:
When using a dark mode by following the doc, the ion-refresher for material design keeps a light theme rather than having a custom dark theme.

Note: the issue does not appear on iOS design as the ion-refresher is completely different

Expected behavior:
All basic components should have a dark theme variant

Steps to reproduce:

• Bootstrap an app
• Setup a dark mode following the doc
• Add an ion-refresher on a page
• Use material design
• Pull down on the page

Related code:
Demo available here: https://stackblitz.com/edit/ionic-angular-v5-hpsehd
Just pull down on the page

Other information:
I'll submit a PR with a fix shortly

Ionic info:

Ionic:

   Ionic CLI                     : 6.12.2 (/usr/local/lib/node_modules/@ionic/cli)
   Ionic Framework               : @ionic/angular 5.5.1
   @angular-devkit/build-angular : 0.1100.3
   @angular-devkit/schematics    : 11.0.2
   @angular/cli                  : 11.0.3
   @ionic/angular-toolkit        : 3.0.0

Capacitor:

   Capacitor CLI   : 2.4.4
   @capacitor/core : 2.4.4

Utility:

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

System:

   NodeJS : v12.16.3 (/usr/local/bin/node)
   npm    : 6.14.9
   OS     : macOS Big Sur

[liamdebeasi]

Thanks for the issue. This has been resolved via #22639, and a fix will be available in an upcoming release of Ionic Framework.

[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.