patch abstract enviroment to not produce double clearpages

this happend when using `\include` (which produces the first clearpage)  for the abstract (which clears the page when entering the env)
as the chapter started inside the `\quotation`, both pageclears executed fully and an empty page was shipped to the pdf.

src/HsH-article.cls

@@ -298,8 +298,8 @@
   }{}
 }
 \RequirePackage{scrhack}
-\AddToHook{package/siunitx/before}{\RequirePackage{xcolor}}
-\AddToHook{package/siunitx/after}{
+\AddToHook{package/listings/before}{\RequirePackage{xcolor}}
+\AddToHook{package/listings/after}{
   \lstset{
     commentstyle=\color{gray},
     keywordstyle=\color{FireBrick}\bfseries,
@@ -479,9 +479,13 @@
 \renewcommand{\labelitemiii}{\raisebox{-.1ex}{\scalebox{1.3}{$\cdot$}}}
 \renewcommand{\labelitemiv}{\raisebox{.1ex}{-}}
 \renewenvironment{abstract}{
+  \begingroup
+    \edef\raggedsection{\raggedsection%
+      \hskip\leftmargini}
+    \HsH@abstract@heading{\abstractname}
+  \endgroup
   \quotation
   \setparsizes{\z@}{\z@}{.25\linewidth \@plus 1fil}\selectfont
-  \HsH@abstract@heading{\abstractname}
 }{%
   \ifx\@keywords\@empty\else\if@HsH@option@abstract@show@keywords
     \par\bigskip

src/HsH-classes.dtx

@@ -1582,13 +1582,20 @@ http://www.latex-project.org/lppl.txt
 %    \end{macrocode}
 %
 %     \paragraph{Abstract}
-%     We define some custom behavior for the abstract.
+%     We define some custom behavior for the abstract. Its typeset as a quote, so
+%     its a little smaller than the rest of the text. We also indent the heading to
+%     match that.
 %    \begin{macrocode}
 %<*!standalone>
 \renewenvironment{abstract}{
+  \begingroup
+%<article>    \edef\raggedsection{\raggedsection%
+%<report>    \edef\raggedchapter{\raggedchapter%
+      \hskip\leftmargini}
+    \HsH@abstract@heading{\abstractname}
+  \endgroup
   \quotation
   \setparsizes{\z@}{\z@}{.25\linewidth \@plus 1fil}\selectfont
-  \HsH@abstract@heading{\abstractname}
 }{%
   \ifx\@keywords\@empty\else\if@HsH@option@abstract@show@keywords
     \par\bigskip

src/HsH-report.cls

@@ -298,8 +298,8 @@
   }{}
 }
 \RequirePackage{scrhack}
-\AddToHook{package/siunitx/before}{\RequirePackage{xcolor}}
-\AddToHook{package/siunitx/after}{
+\AddToHook{package/listings/before}{\RequirePackage{xcolor}}
+\AddToHook{package/listings/after}{
   \lstset{
     commentstyle=\color{gray},
     keywordstyle=\color{FireBrick}\bfseries,
@@ -492,9 +492,13 @@
 \renewcommand{\labelitemiii}{\raisebox{-.1ex}{\scalebox{1.3}{$\cdot$}}}
 \renewcommand{\labelitemiv}{\raisebox{.1ex}{-}}
 \renewenvironment{abstract}{
+  \begingroup
+    \edef\raggedchapter{\raggedchapter%
+      \hskip\leftmargini}
+    \HsH@abstract@heading{\abstractname}
+  \endgroup
   \quotation
   \setparsizes{\z@}{\z@}{.25\linewidth \@plus 1fil}\selectfont
-  \HsH@abstract@heading{\abstractname}
 }{%
   \ifx\@keywords\@empty\else\if@HsH@option@abstract@show@keywords
     \par\bigskip

src/HsH-standalone.cls

@@ -141,8 +141,8 @@
   }{}
 }
 \RequirePackage{scrhack}
-\AddToHook{package/siunitx/before}{\RequirePackage{xcolor}}
-\AddToHook{package/siunitx/after}{
+\AddToHook{package/listings/before}{\RequirePackage{xcolor}}
+\AddToHook{package/listings/after}{
   \lstset{
     commentstyle=\color{gray},
     keywordstyle=\color{FireBrick}\bfseries,