offroad ui: update chill mode icon (#26523)

* Add files via upload

* Add files via upload

* Delete thick couch.svg

* Rename img_couch.svg to img_couch_old.svg

* Rename thickerer couch.svg to img_couch.svg

* Add files via upload

* Rename img_couch.svg to img_couch_alt.svg

* Rename best couch.svg to img_couch.svg

* delete old files
old-commit-hash: c3e2d35963

selfdrive/assets/img_couch.svg

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:ea87cc840ba1b0b96351bbde97af171c3cda462559459e186a5689f9f4aba82e
-size 2311
+oid sha256:a428d2561198ebdc853ba6fb25a8b9c5a58064d000413694e1535adc06633c0a
+size 2649