Fix avatar row in settings with untrusted certificates

[zacwest]

Summary

Use an auth challenge aware URLSession to download the avatar. Missed this one internal use of URLSession.session in #2131.

Screenshots

[codecov]

Codecov Report

Merging #2142 (a931580) into master (662eec4) will increase coverage by 0.09%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #2142      +/-   ##
==========================================
+ Coverage   28.46%   28.55%   +0.09%     
==========================================
  Files         269      269              
  Lines       29838    29814      -24     
==========================================
+ Hits         8492     8513      +21     
+ Misses      21346    21301      -45     

Impacted Files	Coverage Δ
Sources/App/Settings/Eureka/AccountRow.swift	0.00% <0.00%> (ø)
...rces/Shared/Common/Extensions/URL+Extensions.swift	42.22% <0.00%> (-13.34%)	⬇️
...ces/Shared/API/Webhook/Sensors/StorageSensor.swift	98.59% <0.00%> (+0.02%)	⬆️
...hared/Notifications/LocalPush/LocalPushEvent.swift	99.37% <0.00%> (+0.62%)	⬆️
Sources/Shared/API/Models/RealmZone.swift	67.84% <0.00%> (+1.76%)	⬆️
...rces/Shared/API/Models/WebhookUpdateLocation.swift	93.25% <0.00%> (+2.24%)	⬆️
Sources/Shared/Environment/DeviceWrapper.swift	43.97% <0.00%> (+4.96%)	⬆️
Sources/Shared/Environment/Constants.swift	73.45% <0.00%> (+5.30%)	⬆️
Sources/Shared/Common/BackgroundTask.swift	95.08% <0.00%> (+8.19%)	⬆️
Sources/Shared/API/WatchHelpers.swift	21.68% <0.00%> (+14.45%)	⬆️
... and 1 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 662eec4...a931580. Read the comment docs.