workflows/l10n.yml: Fix l10n_installation_test.

In "Test Make installation" step, set french locale
BEFORE building with make.
If not, the binary is build with no embedded french locale.

Author: lordeji

.github/workflows/l10n.yml

@@ -595,6 +595,10 @@ jobs:
         ## Test installation via make with DESTDIR
         echo "Testing make install with l10n features..."
 
+        # Set French locale
+        export LANG=fr_FR.UTF-8
+        export LC_ALL=fr_FR.UTF-8
+
         # Create installation directory
         MAKE_INSTALL_DIR="$PWD/make-install-dir"
         mkdir -p "$MAKE_INSTALL_DIR"
@@ -632,10 +636,6 @@ jobs:
         if [ "${{ matrix.job.os }}" = "ubuntu-latest" ]; then
           echo "Testing French localization with make-installed binary..."
 
-          # Set French locale
-          export LANG=fr_FR.UTF-8
-          export LC_ALL=fr_FR.UTF-8
-
           echo "Testing ls --help with French locale..."
           ls_help=$("$MAKE_INSTALL_DIR/usr/bin/coreutils" ls --help 2>&1 || echo "Command failed")
           echo "ls help output (first 10 lines):"