[feature] Exclude muted watches from the RSS feed

[Nosen92]

Version and OS
For example, 0.123 on linux/docker

Currently running v0.45.17 in a docker container

Is your feature request related to a problem? Please describe.
Muted watches show up in the RSS feed. Muted watches are muted by the user because they are deemed low priority. They don't alert the user when a change has occurred, instead they quietly keep a watch going. However, the RSS feed does not take 'mute' status into consideration. All changes, muted or not, are treated equally and are all sent in this feed. For users with several muted watches that see frequent changes, this is annoying and alert fatiguing.

Describe the solution you'd like
Muted watches should not appear in the RSS feed. By excluding watches that are muted, the user will only receive meaningful changes in the RSS feed, making it far more useful.

Describe the use-case and give concrete real-world examples

Additional context
Add any other context or screenshots about the feature request here.

[dgtlmoon]

yeah this could also be a nice setting