feat(profile): revisit electron based profiles.

- cleanup and enforce signal
- fix discord

fix #773 #777

apparmor.d/groups/freedesktop/xdg-settings

@@ -15,7 +15,7 @@ profile xdg-settings @{exec_path} {
 
   @{exec_path} r,
 
-  @{sh_path}       rix,
+  @{sh_path}       r,
   @{bin}/{,e}grep  rix,
   @{bin}/basename  rix,
   @{bin}/cat        ix,

apparmor.d/groups/network/mullvad-gui

@@ -26,9 +26,9 @@ profile mullvad-gui @{exec_path} flags=(attach_disconnected) {
   network netlink raw,
 
   @{exec_path} mrix,
-  @{sh_path}    rix,
+  @{sh_path} rix,
 
-  @{bin}/gsettings     rix,
+  @{bin}/gsettings     rPx,
   @{open_path}         rPx -> child-open-browsers,
 
   owner @{user_cache_dirs}/dconf/user rw,