libreoffice: add withJava option

pkgs/applications/office/libreoffice/default.nix

···
   ],
   withFonts ? false,
   withHelp ? true,
+  withJava ? true,
   kdeIntegration ? false,
   variant ? "fresh",
   debugLogging ? variant == "still",
···
   '';
 
   nativeBuildInputs = [
-    ant
     autoconf
     automake
     bison
···
     gettext
     gperf
     icu
-    jdk21
     libmysqlclient
     libtool
     libxml2
···
   ]
   ++ optionals kdeIntegration [
     qt6.qtbase
+  ]
+  ++ optionals withJava [
+    ant
+    jdk21
   ];
 
   buildInputs =
···
       (harfbuzz.override { withIcu = true; })
       hunspell
       icu
-      jre'
       lcms2
       libGL
       libGLU
···
       qt6.qtbase
       kdePackages.kcoreaddons
       kdePackages.kio
+    ]
+    ++ optionals withJava [
+      jre'
     ];
 
   preConfigure = ''
···
     "--without-buildconfig-recorded"
 
     (lib.withFeature withHelp "help")
-    "--with-beanshell-jar=${bsh}"
     "--with-vendor=NixOS"
     "--disable-report-builder"
     "--disable-online-update"
···
     "--enable-dbus"
     "--enable-release-build"
     "--enable-epm"
-    "--with-ant-home=${ant.home}"
+    (lib.withFeature withJava "java")
 
     # Without these, configure does not finish
     "--without-junit"
···
     (lib.withFeature withFonts "fonts")
     "--without-doxygen"
 
-    "--with-system-beanshell"
     "--with-system-cairo"
     "--with-system-coinmp"
     "--with-system-headers"
···
     "--enable-kf6"
     "--enable-qt6"
   ]
+  ++ optionals withJava [
+    "--with-system-beanshell"
+    "--with-ant-home=${ant.home}"
+    "--with-beanshell-jar=${bsh}"
+  ]
   ++ (
     if variant == "fresh" || variant == "collabora" then
       [
···
 
   passthru = {
     inherit srcs;
-    jdk = jre';
+    jdk = if withJava then jre' else null;
     python = python311; # for unoconv
     updateScript = [
       ./update.sh