fix(tool,neon,neon_files,app): Update icons

Signed-off-by: jld3103 <jld3103yt@gmail.com>

packages/neon/neon_files/assets/app.svg

@@ -1 +1 @@
-<svg width="32" height="32" version="1.1" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><path d="m3 4c-0.5 0-1 0.5-1 1v22c0 0.52 0.48 1 1 1h26c0.52 0 1-0.482 1-1v-18c0-0.5-0.5-1-1-1h-13l-4-4z" fill="#f37736"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" id="mdi-folder" viewBox="0 0 24 24"><path d="M10,4H4C2.89,4 2,4.89 2,6V18A2,2 0 0,0 4,20H20A2,2 0 0,0 22,18V8C22,6.89 21.1,6 20,6H12L10,4Z" fill="#f37736" /></svg>

tool/generate-neon.sh

@@ -34,7 +34,9 @@ mkdir -p "$icons_dir"
 shopt -s extglob
 for file in external/nextcloud-server/{core/img/*,apps/*/img}/!(app|app-dark).svg; do
   name="$(basename "$file" | sed "s/.svg$//" | sed "s/-dark$//" | sed "s/-white$//").svg"
+  if ! grep "<image " "$file"; then
     cp -u "$file" "$icons_dir/$name"
+  fi
 done
 
 (