Fix subtitle delete permission

[Ch1nkara]

Clarify for the user the usage of the SubtitleManagement permission by doing the following modifications:

1. "Allow this user to ~~edit~~ subtitles" is changed to "Allow this user to add subtitles"
2. the trash logo from the "edit subtitle" menu is hidden if the user do not have "deletion authorization"

Changes The first change is made because if the user has only SubtitleManagement right, it is not enough to delete subtitle, he also needs "allow media deletion" right

Issues Origin issue: https://github.com/jellyfin/jellyfin/issues/11318 Jellyfin PR with discussion about how to implement: https://github.com/jellyfin/jellyfin/pull/11507