Fix appearance of "Sign in with Google" button

[sivasubramaniamv]

fixes #6924

Before

After

[cketti]

Whenever you see something like this, ask yourself why. Manually specifying a hard-coded color is extra work and doesn't make sense given that the app supports multiple themes. So it's likely there was a good reason for that.

Checking out the PR that introduced this screen should give you an idea: #6096

The button should display the custom Google design. This no longer works because we switched to a material theme and now a <Button> element is inflated as a MaterialButton which doesn't support the android:background attribute.

Changing

<Button
    android:id="@+id/google_sign_in_button"
    …

to

<androidx.appcompat.widget.AppCompatButton
    android:id="@+id/google_sign_in_button"
    …

should fix the issue.

[sivasubramaniamv]

@cketti I've changed it. Thank you :)

[cketti]

Thanks 👍