[Test Failed] Python IP handling might miss network interfaces for link local addresses

[Apollon77]

Test issue(s)

The issue arised with TC_OPCREDS_3_1.py and lead to the Slack discussion and analysis https://csamembers.slack.com/archives/G014G30SVV0/p1720621077447749

Essence from @tennessee-google:

Actually, I found the core of the issue -> the IPAddress is string-converted without the interface ID
And passed as string
This requires fixing pychip_DeviceController_IterateDiscoveredCommissionableNodes and requires that bigger buffers be used which can accomodate both a max-sized stringified IP address and a max-sized stringified interfaceID, and the % separator

Platform

all

Anything else?

No response