Correct label position for LaTeX align math environment

[xiaodong-hu]

The minimal example for align environment is:

#import "@preview/mitex:0.2.1": *
#set math.equation(numbering: "(1)", supplement: [#text(blue)[*Eq.*]])

#mitext(`
    This is \emph{math} \textbf{equation} test for \eqref{eq:1}.
    \begin{align}
      \text{Stokes formula}\quad \int_{\mathcal M}\mathrm{d}\omega&=\int_{\partial\mathcal M}\omega\nonumber\\
      \textbf{Jacobi-}$\vartheta$ \textbf{Function}\quad f(z)&=e^{ik\cdot z}\prod_{\nu=1}^{N_s}\vartheta\left(2\pi\frac{z-z_\nu}{L_1}\middle|\tau\right).\label{eq:1}
    \end{align}
`)

What I got is

Here the label is NOT correctly placed at the end of the second line, even if I use the command \nonumber for the first line.