Modify splash screen template so that it will display multiple IP addresses properly.

[nicomiguelino]

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Overview of the Issue

The splash screen currently displays multiple addresses in one line, which makes it quite hard to read. Here's a screenshot for reference:

Reproduction Steps

There are several ways to reproduce this one:

• Boot up the Raspberry Pi.
• Connect to Wi-Fi using wifi-connect.

Environment

• Raspberry Pi Hardware Version: Raspberry Pi 3 Model B+, Raspberry Pi 4 Model B
• Raspberry Pi Network Setup: built-in WiFi, Ethernet, USB WiFi Adapter
• OS: Raspberry Pi OS Lite (Bullseye), balenaOS