Use grouped Azure CLI repo write capture

Author: Copilot

scripts/install.sh

@@ -321,16 +321,18 @@ configure_azure_cli_rpm_repo() {
     fi
 
     local repo_write_error
-    if ! repo_write_error=$(tee "$AZURE_CLI_RPM_REPO_PATH" 2>&1 > /dev/null << 'EOF'
+    if ! repo_write_error=$(
+        {
+            tee "$AZURE_CLI_RPM_REPO_PATH" > /dev/null << 'EOF'
 [azure-cli]
 name=Azure CLI
 baseurl=https://packages.microsoft.com/yumrepos/azure-cli
 enabled=1
 gpgcheck=1
 gpgkey=https://packages.microsoft.com/keys/microsoft.asc
 EOF
-    )
-    then
+        } 2>&1
+    ); then
         if [[ -n "$repo_write_error" ]]; then
             log_error "Failed to write Azure CLI dnf package source $AZURE_CLI_RPM_REPO_PATH: $repo_write_error"
         else