WebNotifications for `0.5.2.xpi` spam in batches after `aw-server-rust-0.13.1` invokes.

#### The Reproduction Method And Its Consequence

For > 15 s after `aw-server-rust-0.13.1^20250507.gitc640979-1.fc42.x86_64`'s `aw-server` is invoked, I see: [^1]

[^1]: [`orgs/ActivityWatch/discussions/1168#discussioncomment-14080965`][1]

[1]: https://github.com/orgs/ActivityWatch/discussions/1168#discussioncomment-14080965

Thereafter, it appears to cease for approximately 40 s, before it recommences. However, IDK whether my DE is merely suppressing them.

#### My Environment

1. #### The Server And Client

1. ~~~sh
#!/usr/bin/env sh
rpm -qa *-aw*
~~~

1.

~~~txt
python3-aw-core-0.5.17-3.fc42.noarch
python3-aw-client-0.5.14-2.fc42.noarch
nodejs-aw-webui-0^20250507.9259df7-2.fc42.noarch
python3-aw-qt-0^20240903.43864b2-2.fc42.noarch
~~~

1. #### The Extension

`aw_watcher_web-0.5.2.xpi`

1. #### Firefox

1. ~~~sh
#!/usr/bin/env sh
dnf5 --refresh info $(rpm -qa firefox)
~~~

1.

~~~YAML
Name : firefox
Epoch : 0
Version : 141.0.2
Release : 1.fc42
Architecture : x86_64
Installed size : 246.8 MiB
Source : firefox-141.0.2-1.fc42.src.rpm
From repository :
Vendor : Fedora Project
~~~

1. #### The OS And DE

1. ~~~sh
#!/usr/bin/env sh
fastfetch -l none
~~~

1.

~~~YAML
OS: Fedora Linux 42 (KDE Plasma Desktop Edition) x86_64
Host: Laptop 16 (AMD Ryzen 7040 Series) (A7)
Kernel: Linux 6.15.9-201.fc42.x86_64
Uptime: 1 hour, 1 min
Packages: 2926 (rpm), 23 (flatpak)
Shell: bash 5.2.37
Display (BOE0BC9): 2560x1600 @ 165 Hz (as 1706x1066) in 16" [Built-in]
DE: KDE Plasma 6.4.4
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt], Breeze-Dark [GTK3/4]
Icons: breeze-dark [Qt], breeze-dark [GTK3/4]
Font: Monospace (10pt) [Qt], Monospace (10pt) [GTK3/4]
Cursor: breeze (24px)
Terminal: konsole 25.4.3
CPU: AMD Ryzen 7 7840HS (16) @ 5.14 GHz
GPU: AMD Radeon 780M Graphics [Integrated]
Memory: 11.11 GiB / 30.65 GiB (36%)
Swap: 0 B / 8.00 GiB (0%)
Disk (/): 190.47 GiB / 929.91 GiB (20%) - btrfs
Local IP (wlp1s0): 192.168.1.219/24
Battery (FRANDBA): 87% [Charging, AC Connected]
Locale: en_GB.UTF-8
~~~