Replace all profile fetching methods with IWeb

The previous HTML method is gone due to a page restructure. It was
able to consistently bypass Instagram's blocking.

The IWeb method has a few hundred uses per X time for selfhosters, and
a couple dozen uses per X time for servers. This will likely change in
the future. There is no known way to bypass Instagram's IWeb blocking.

Feel free to look for a way.

Further timeline pages are still blocked. The "next page" button
defaults to not automatically loading when scrolled, since it will
basically never work anyway. Users running personal instances may be
able to get a couple of uses out of it.

src/lib/constants.js

@@ -41,7 +41,7 @@ let constants = {
 	// change this to `true` to serve it, which will make extensions like Privacy Badger automatically whitelist the domain.
 	does_not_track: false,
 
-	allow_user_from_reel: "fallback", // one of: "never", "fallback", "prefer", "onlyPreferSaved", "preferForRSS"
+	allow_user_from_reel: "iweb", // legacy. this must be "iweb" now.
 	proxy_media: { // Whether to proxy media (images, videos, thumbnails) through Bibliogram. This is strongly recommended to protect user privacy. If proxy is turned off, some browser content blockers may break all images since they are served from Facebook domains.
 		image: true,
 		video: true,
@@ -155,7 +155,7 @@ let constants = {
 			replaceEmptyWithDefault: false
 		},{
 			name: "infinite_scroll",
-			default: "normal",
+			default: "off",
 			boolean: false,
 			replaceEmptyWithDefault: true
 		},{
@@ -239,7 +239,7 @@ let constants = {
 	// Instagram uses this stuff. This shouldn't be changed, except to fix a bug that hasn't yet been fixed upstream.
 	external: {
 		reel_query_hash: "c9100bf9110dd6361671f113dd02e7d6",
-		timeline_query_hash: "e769aa130647d2354c40ea6a439bfc08",
+		timeline_query_hash: "69cba40317214236af40e7efa697781d",
 		timeline_query_hash_2: "42323d64886122307be10013ad2dcc44", // https://github.com/rarcega/instagram-scraper/blob/dc022081dbefc81500c5f70cce5c70cfd2816e3c/instagram_scraper/constants.py#L30
 		shortcode_query_hash: "2b0673e0dc4580674a88d426fe00ea90",
 		igtv_query_hash: "bc78b344a68ed16dd5d7f264681c4c76",