Disable ripple for checkbox

[ability-app]

Reproduction

Steps to reproduce:

1. GoTo a modified example from the docs: https://stackblitz.com/edit/angular-wqcqyp
2. {provide: MAT_RIPPLE_GLOBAL_OPTIONS, useValue: { disabled: true }} inside main.ts
3. mat-checkbox [disableRipple]="true" in checkbox-configurable-example.html

Expected Behavior

IT should not be visible but after updating to angular 8 and Angular material latest version the ripple is visible again even if disableRipple is used, so I added the global disable ripple configuration but still the same

Actual Behavior

The ripple on the checkbox on hover is visible although disableRipple and MAT_RIPPLE_GLOBAL_OPTIONS disabled is specified

Environment

• Angular: 8
• CDK/Material: 8.2.4 (same issue with 8.1.4)
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): macOs

[ability-app]

Could be connected to:
#16100

Just add
<mat-checkbox>Checked 1</mat-checkbox>

to the app.component in the source code of the named issue and you will see that it still has 'hover' effect, It's a regression after i updated from angular material 6, but it could be that I disabled it trough CSS.

Workaround fix would be:
.mat-ripple { display: none; }

or .mat-checkbox-ripple only for checkbox

[crisbeto]

The ripples only refer to the ones that are shown on clicks. It doesn't affect the one that show up in hover or focus, because they're there for accessibility.

[crisbeto]

Closing since this is working as expected.

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