add test files

required/latex-lab/testfiles-math-luatex/math-20-alt-noluamml.pvt

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+% template for math reading. 
+\ExplSyntaxOn \sys_gset_rand_seed:n{1000} \ExplSyntaxOff
+\DocumentMetadata
+ {
+  uncompress,testphase={phase-III,title,math},
+  %pdfversion=1.7,
+  %pdfstandard=ua-1
+  pdfversion=2.0,
+  pdfstandard=ua-2
+ }
+\input{regression-test}
+
+\documentclass{article}
+\makeatletter
+\ExplSyntaxOn
+\tl_put_right:Nn\cdp@list{\cdp@elt {TU}{lmr}{m}{n}} 
+\ExplSyntaxOff
+\makeatother
+
+\usepackage{unicode-math}
+
+\title{Test math tagging \jobname}
+
+% global setups
+% rolemap mathml to Span default false  (probably senseless)
+%\tagpdfsetup{role/mathml-tags}  
+
+% suppress loading of luamml
+\tagpdfsetup{math/mathml/luamml/load=false} %
+
+% suppress writing of luamml-mathml
+%\tagpdfsetup{math/mathml/luamml/write=false} %
+
+% suppress mathml-AF reading
+\tagpdfsetup{math/mathml/sources=} %
+
+% enable structure elements
+%\tagpdfsetup{math/mathml/structelem} %
+
+\begin{document}
+% local settings. Can also be in the preamble but used here for clarity
+
+% alt text, default currently false if not ua-1
+\tagpdfsetup{math/alt/use = true}      
+
+% suppress tex source AF
+\tagpdfsetup{math/tex/AF=false} 
+
+% suppress attaching of mathml-AF (local setting) 
+% \tagpdfsetup{math/mathml/AF=false}
+
+inline $E=mc^2$
+
+display
+\[a^2+b^2=c^2\]
+
+\end{document}