network,udev: do not adjust local assignment bit of specified MAC address

People often assigns the MAC address of the enslaved interface to e.g.
bridge interface. So, the local assignment bit should not be adjusted.

Fixes #21649.

src/network/netdev/netdev.c

@@ -402,7 +402,7 @@ int netdev_generate_hw_addr(
                 struct hw_addr_data *ret) {
 
         struct hw_addr_data a = HW_ADDR_NULL;
-        bool warn_invalid = false;
+        bool is_static = false;
         int r;
 
         assert(netdev);
@@ -465,10 +465,10 @@ int netdev_generate_hw_addr(
 
         } else {
                 a = *hw_addr;
-                warn_invalid = true;
+                is_static = true;
         }
 
-        r = net_verify_hardware_address(name, warn_invalid, NETDEV_VTABLE(netdev)->iftype,
+        r = net_verify_hardware_address(name, is_static, NETDEV_VTABLE(netdev)->iftype,
                                         parent ? &parent->hw_addr : NULL, &a);
         if (r < 0)
                 return r;