Is your feature request related to a problem? Please describe it.

For example, I have the following code, and now I want to toggle the last display math equation to an inline equation, and I type ts$.

\begin{proof}
    This is the proof of Theorem 1.
    \begin{equation}
        1+1=2
    \end{equation}
\end{proof}

Now it becomes

\begin{proof}
    This is the proof of Theorem 1. $1+1=2$ \end{proof}

I think it's better to become

\begin{proof}
    This is the proof of Theorem 1. $1+1=2$ 
\end{proof}

Namely, keep the \end{proof} alone.

Describe the solution you'd like

Keep the \end command alone when toggling a display math equation to an inline equation.

Describe alternatives you've considered
No.

Additional context
No.