fix(console): Fix build issues when CONFIG_ESP_CONSOLE_NONE is enabled

This commit fixes the following build issues when CONFIG_ESP_CONSOLE_NONE is
enabled:

- vfs_console.c will attempt to register a VFS entry for STDIO console even if
CONFIG_ESP_CONSOLE_NONE is enabled. This results in "undeclared `primary_path`"
error.
- esp_console_repl_chpi.c does not use "TAG" when CONFIG_ESP_CONSOLE_NONE is
enabled, leading to a "defined by not used" warning.

Closes https://github.com/espressif/esp-idf/issues/12984

components/console/esp_console_repl_chip.c

@@ -22,7 +22,9 @@
 
 #include "console_private.h"
 
+#if !CONFIG_ESP_CONSOLE_NONE
 static const char *TAG = "console.repl";
+#endif // !CONFIG_ESP_CONSOLE_NONE
 
 #if CONFIG_ESP_CONSOLE_UART_DEFAULT || CONFIG_ESP_CONSOLE_UART_CUSTOM
 static esp_err_t esp_console_repl_uart_delete(esp_console_repl_t *repl);

components/vfs/vfs_console.c

@@ -207,10 +207,12 @@ esp_err_t esp_vfs_console_register(void)
         return err;
     }
 #endif
+#if !CONFIG_ESP_CONSOLE_NONE
     err = esp_vfs_register_common(primary_path, strlen(primary_path), primary_vfs, NULL, &primary_vfs_index);
     if (err != ESP_OK) {
         return err;
     }
+#endif // !CONFIG_ESP_CONSOLE_NONE
 
 // Secondary register part.
 #if CONFIG_ESP_CONSOLE_SECONDARY_USB_SERIAL_JTAG