Reset shortcuts scope when leaving tags route
Reset shortcuts scope when leaving tags route

refs #6191, #6192
- adds additional safeguard to tags route to ensure keymaster scope doesn't get stuck in a non-default scope that may break shortcuts elsewhere

TryGhost/Ghost-Admin,dbalders/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,dbalders/Ghost-Admin,JohnONolan/Ghost-Admin,JohnONolan/Ghost-Admin,airycanon/Ghost-Admin,airycanon/Ghost-Admin,acburdine/Ghost-Admin,kevinansfield/Ghost-Admin,TryGhost/Ghost-Admin