classPrefix breaks target blocking

[npedrini]

If you specify a classPrefix in the tour options, any highlighted elements in steps where canClickTarget = true are still clickable because the following css selector breaks:

.shepherd-target-click-disabled.shepherd-enabled.shepherd-target,.shepherd-target-click-disabled.shepherd-enabled.shepherd-target *{
    pointer-events:none
}

The following custom css rule has to be added, taking into account the classPrefix:

.shepherd-target-click-disabled.walkthrough-shepherd-enabled.shepherd-target,.shepherd-target-click-disabled.walkthrough-shepherd-enabled.shepherd-target *{
    pointer-events:none
}

[RobbieTheWagner]

@npedrini would you like to submit a PR adding class prefix support for this?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[edenriquez]

Is this issue still happening ? can I take it ?