Bind and prevalence operators are not horizontally centered

[tillschallau]

In the following image you can see, that the bind arrow is not horizontally centered with the prevalence operators.

\begin{itemize}
    \item $\cbind{t}{x}\varphi$ (bind)
    \item $\cminprevalence{y}\varphi$ (min prevalence)
    \item $\cpastminprevalence{y}\varphi$ (past min prevalence)
\end{itemize}