Seems to leak file handles

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Steps to reproduce

1. Enable + setup notify_push app
2. Open files immediately increases

Expected behaviour

The number of open files should mostly remain unchanged.

Actual behaviour

After enabling the notify_push app, the number of open files on my Nextcloud server(s) is skyrocking:

Restarting php-fpm causes the number of open files to return to normal (but only for a short amount of time).

Server configuration

Web server: Apache HTTPD

Database: MySQL

PHP version: 8.3

Nextcloud version: 30.0.5

# most open files are related to php-fpm
lsof | grep php-fpm | wc -l
21940

# redis seems to play a part too (runs on the same machine)
lsof | grep redis-ser | wc -l
4650

# a relatively large number of TCP connections
lsof | grep TCP | wc -l
10692

# most of those TCP connections are redis?
lsof | grep TCP | grep redis | wc -l
4679

# of course, many libraries are referenced
lsof | grep lib64 | wc -l
74546

My first assumption is that notify_push may leak redis connections, maybe they are not properly closed or they do not expire soon enough.

Browser

browser seems to be unrelated

No source files or tests are identified. Start by reproducing the issue with the notify_push app enabled, then use lsof to compare php-fpm, Redis, and TCP connection counts over time. Done means open-file and connection counts remain stable instead of rising until php-fpm is restarted.