[Nightly] Unknown subscriber count in SubscriptionFragment

[TobiGr]

Checklist

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Affected version

0.28.1 RC1

Steps to reproduce the bug

1. Subscribe to a channel and notice a subscription count > 0
2. Open Subcription tab

Rreported in #12925 (comment)

Expected behavior

Actual subscriber count is displayed

Actual behavior

"Subscriber count unknown" is displayed

Screenshots/Screen recordings

Logs

No response

Affected Android/Custom ROM version

all

Affected device model

all

Additional information

Possible regression of #12746

Subscriber count is correctly stored in the database. The bug happens somewhere after that. The corresponding InfoItem has a value of -1