gegl-devel: sync with gegl

- Re-add nodownload (better safe than sorry)
- Change vala to depends_build-append
  See: https://trac.macports.org/ticket/71697

graphics/gegl-devel/Portfile

@@ -33,6 +33,9 @@ checksums           rmd160  db6f064cf0df7688990d73d84145b4341f1e0051 \
                     sha256  47f50d9c3aecd375deb48c11ebfead52d162e4fc162a4b3d44618277f1faec02 \
                     size    6164464
 
+# Disable unexpected download of subprojects
+meson.wrap_mode     nodownload
+
 set py_ver          3.14
 set py_ver_nodot    [string map {. {}} ${py_ver}]
 set py_framework    ${frameworks_dir}/Python.framework/Versions/${py_ver}
@@ -172,6 +175,7 @@ variant vala description {Enable build of vala extensions} {
     configure.args-replace \
                     -Dvapigen=disabled \
                     -Dvapigen=enabled
+    license_noconflict  vala
 }
 
 variant workshop description {Enable build of workshop operations} {