[network] Add Zephyr IPv6 networking support for nRF52 (#16336)

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esphome/components/web_server_base/web_server_base.cpp

@@ -1,5 +1,5 @@
 #include "web_server_base.h"
-#ifdef USE_NETWORK
+#if defined(USE_NETWORK) && !defined(USE_ZEPHYR)
 
 namespace esphome::web_server_base {