mpv: rename plugin: sane -> sane-cast

hosts/common/programs/mpv/default.nix

@@ -216,7 +216,7 @@ in
       # for `watch_later`
       ".local/state/mpv"
     ];
-    fs.".config/mpv/scripts/sane/main.lua".symlink.target = ./sane-main.lua;
+    fs.".config/mpv/scripts/sane-cast/main.lua".symlink.target = ./sane-cast-main.lua;
     fs.".config/mpv/input.conf".symlink.target = ./input.conf;
     fs.".config/mpv/mpv.conf".symlink.target = ./mpv.conf;
     fs.".config/mpv/script-opts/osc.conf".symlink.target = ./osc.conf;