app-editors/gnome-latex: regenerate vala files

It is anciently rotting as is standard for transpiled C, and needs
regeneration with the latest bug fixes for Modern C.

Closes: https://bugs.gentoo.org/945322
Signed-off-by: Eli Schwartz <eschwartz@gentoo.org>

app-editors/gnome-latex/gnome-latex-3.46.0-r1.ebuild

@@ -1,9 +1,9 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-inherit gnome2
+inherit gnome2 vala
 
 DESCRIPTION="Integrated LaTeX environment for GNOME"
 HOMEPAGE="https://gitlab.gnome.org/swilmet/gnome-latex"
@@ -33,6 +33,7 @@ RDEPEND="${DEPEND}
 	rubber? ( dev-tex/rubber )
 "
 BDEPEND="
+	$(vala_depend)
 	dev-util/gdbus-codegen
 	dev-util/glib-utils
 	>=dev-build/gtk-doc-am-1.14
@@ -41,6 +42,10 @@ BDEPEND="
 	virtual/pkgconfig
 "
 
+pkg_setup() {
+	vala_setup
+}
+
 src_configure() {
 	gnome2_src_configure \
 		$(use_enable introspection) \