`\symbfit` and `\symbfsfit` outputs numerals as regular weight

[e-kwsm]

Description

\symbfit and \symbfsfit outputs numerals as regular weight but not bold.

https://github.com/wspr/unicode-math/blob/d3aba9654145a18e74f86eef3fd1a68e5ab2e7c3/um-doc-main.tex#L658

Check/indicate

• [x] Relevant for XeTeX
• [x] Relevant for LuaTeX
• [x] Issue tracker has been searched for similar issues?
• [ ] Links to discussion if appropriate

Minimal example demonstrating the issue

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{texgyrepagella-math.otf}

\begin{document}
\begin{tabular}{l@{ }c}
  \verb|\mathbf|    & $\mathbf{0x}$    \\
  \verb|\symup|     & $\symup{0x}$     \\
  \verb|\symbfup|   & $\symbfup{0x}$   \\
  \verb|\symit|     & $\symit{0x}$     \\
  \verb|\symbfit|   & $\symbfit{0x}$   \\
  \\
  \verb|\mathsf|    & $\mathsf{0x}$    \\
  \verb|\mathsfup|  & $\mathsfup{0x}$  \\
  \verb|\mathsfit|  & $\mathsfit{0x}$  \\
  \verb|\symsf|     & $\symsf{0x}$     \\
  \verb|\symsfup|   & $\symsfup{0x}$   \\
  \verb|\symsfit|   & $\symsfit{0x}$   \\
  \verb|\symbfsfup| & $\symbfsfup{0x}$ \\
  \verb|\symbfsfit| & $\symbfsfit{0x}$ \\
\end{tabular}
\end{document}

environment:

• LuaLaTeX 1.07.0 (TeX Live 2018)
• XeLaTeX 3.14159265-2.6-0.99999 (TeX Live 2018)
• unicode-math 2018/02/02 vv0.8l

Further details