workflows/l10n.yml: Fix l10n_installation_test.

In "Test Make installation" step, set french locale
BEFORE building with make.
In "Test Cargo installation" step, add french locale
env var before installation.
If not, the binary is built 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):"
@@ -697,6 +697,10 @@ jobs:
         ## Test installation via cargo install with DESTDIR-like approach
         echo "Testing cargo install with l10n features..."
 
+        # Set French locale
+        export LANG=fr_FR.UTF-8
+        export LC_ALL=fr_FR.UTF-8
+        
         # Create installation directory
         CARGO_INSTALL_DIR="$PWD/cargo-install-dir"
         mkdir -p "$CARGO_INSTALL_DIR"