[LyX/master] fix jlreq abstract layout and adapt Chinese docs for unicode engines

[Udi Fogiel]

commit abd35bc33cd5e180d1aace63c5ddba89870742e8
Author: Udi Fogiel <ufogiel at lyx.org>
Date:   Tue Sep 10 15:17:07 2024 +0300

    fix jlreq abstract layout and adapt Chinese docs for unicode engines
    
    jlreq layout defined the abstract environment to be boxed
    in the preamble. Doing any kind of typesetting before
    all the setup has finished is error prone and may lead to
    wrong output (wrong fonts for example). The correct
    place to put the abstract code is right before \maketitle.
    
    The Chinese docs loaded the ctex package in case system fonts
    were used. Now, with the new support for languages with babel
    and polyglossia it is no longer necessary and creates collisions.
---
 lib/doc/zh_CN/Intro.lyx      | 7 -------
 lib/doc/zh_CN/Tutorial.lyx   | 7 -------
 lib/layouts/jlreq-common.inc | 2 +-
 3 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/lib/doc/zh_CN/Intro.lyx b/lib/doc/zh_CN/Intro.lyx
index eab48dae40..762040272b 100644
--- a/lib/doc/zh_CN/Intro.lyx
+++ b/lib/doc/zh_CN/Intro.lyx
@@ -5,13 +5,6 @@
 \save_transient_properties true
 \origin /systemlyxdir/doc/zh_CN/
 \textclass article
-\begin_preamble
-% Chinese localization
-\@ifpackageloaded{fontspec}%
-{\usepackage{ctex}}% ctex with non-TeX fonts
-{%\usepackage[UTF8]{ctex}% error with font setup (missing font?)
-}
-\end_preamble
 \use_default_options true
 \maintain_unincluded_children no
 \language chinese-simplified
diff --git a/lib/doc/zh_CN/Tutorial.lyx b/lib/doc/zh_CN/Tutorial.lyx
index 346d280be4..93f95e389e 100644
--- a/lib/doc/zh_CN/Tutorial.lyx
+++ b/lib/doc/zh_CN/Tutorial.lyx
@@ -5,13 +5,6 @@
 \save_transient_properties true
 \origin /systemlyxdir/doc/zh_CN/
 \textclass book
-\begin_preamble
-% Chinese localization
-\@ifpackageloaded{fontspec}%
-{\usepackage{ctex}}% ctex with non-TeX fonts
-{%\usepackage[UTF8]{ctex}% error with font setup (missing font?)
-}
-\end_preamble
 \options cjk
 \use_default_options true
 \maintain_unincluded_children no
diff --git a/lib/layouts/jlreq-common.inc b/lib/layouts/jlreq-common.inc
index fb7dfba2c3..d601c4ab3b 100644
--- a/lib/layouts/jlreq-common.inc
+++ b/lib/layouts/jlreq-common.inc
@@ -94,7 +94,7 @@ End
 
 Style Abstract_over_Columns
 	CopyStyle			Abstract
-	InPreamble			1
+	InTitle               		1
 	LabelString			"Abstract"
 	Category			FrontMatter
 	LatexType			Command