Fix duplicate notification buttons and force order

[puckey]

• only apply custom actions fix for missing buttons in android 13 and above
• force order of custom actions to always be backward, forward, stop

[puckey]

@dcvz this one can also be included in the next rc

[jeroenptrs]

Tested this on android 10, 12 and 13 on the example app and it appears to work correctly!

[puckey]

@jeroenptrs thanks for testing!

[dcvz]

Thanks for the PR @puckey and thanks for testing @jeroenptrs !