Revert "Add specific maskable icons (#4283)" (#4284)

This reverts commit de0f1b2b65995565df12e897fd091540199c626f.

demo/public/manifest.json

@@ -7,46 +7,26 @@
     {
       "src": "/static/icons/favicon-192x192.png",
       "sizes": "192x192",
-      "type": "image/png"
+      "type": "image/png",
+      "purpose": "maskable any"
     },
     {
       "src": "/static/icons/favicon-384x384.png",
       "sizes": "384x384",
-      "type": "image/png"
+      "type": "image/png",
+      "purpose": "maskable any"
     },
     {
       "src": "/static/icons/favicon-512x512.png",
       "sizes": "512x512",
-      "type": "image/png"
+      "type": "image/png",
+      "purpose": "maskable any"
     },
     {
       "src": "/static/icons/favicon-1024x1024.png",
       "sizes": "1024x1024",
-      "type": "image/png"
-    },
-    {
-      "src": "/static/icons/maskable-192x192.png",
-      "sizes": "192x192",
       "type": "image/png",
-      "purpose": "maskable"
-    },
-    {
-      "src": "/static/icons/maskable-384x384.png",
-      "sizes": "384x384",
-      "type": "image/png",
-      "purpose": "maskable"
-    },
-    {
-      "src": "/static/icons/maskable-512x512.png",
-      "sizes": "512x512",
-      "type": "image/png",
-      "purpose": "maskable"
-    },
-    {
-      "src": "/static/icons/maskable-1024x1024.png",
-      "sizes": "1024x1024",
-      "type": "image/png",
-      "purpose": "maskable"
+      "purpose": "maskable any"
     }
   ],
   "lang": "en-US",