pidgin/pidgin

Only use an info message if we were unable to load the system default preferences

Testing Done:
Ran the debian-bookworm-amd64 container and verified that this fixed the unit tests failing.

Reviewed at https://reviews.imfreedom.org/r/1086/
[wrap-hg]
directory = talkatu
url = https://keep.imfreedom.org/talkatu/talkatu
revision = default