gitlab-ci: Do not make .app bundle on scheduled Homebrew builds

While it was good to know the bundling is running fine,
this had the risk of people taking them as official.

So, let's be consistent with GNU Clang and Clang-CL builds.

.gitlab-ci.yml

@@ -656,9 +656,11 @@ gimp-win-eol:
       interruptible: true
       variables:
         OPT_PREFIX: /opt/macports
+        DMG_OPTION: '-Ddmg=true'
     - if: '$GIMP_CI_MACOS != null || "$[[ inputs.distribution_pipeline ]]" =~ /.*GIMP_CI_MACOS.*/'
       variables:
         OPT_PREFIX: /opt/macports
+        DMG_OPTION: '-Ddmg=true'
     - if: '($GIMP_CI_MESON_APPLECLANG != null || "$[[ inputs.test_pipeline ]]" =~ /.*GIMP_CI_MESON_APPLECLANG.*/) && $CI_JOB_NAME !~ /.*-part.*/ && $CI_JOB_NAME !~ /.*dist-mac-.*/'
       variables:
         OPT_PREFIX: /opt/homebrew
@@ -666,7 +668,6 @@ gimp-win-eol:
     - macos
   variables:
     PKGCONF_RELOCATABLE_OPTION: '-Dpkgconfig.relocatable=true'
-    DMG_OPTION: '-Ddmg=true'
   before_script:
     - export GIMP_PREFIX="$PWD/_install-$(uname -m)"
     - export PATH="$OPT_PREFIX/bin:$PATH"