Don't downcase UCID when searching channels

src/invidious.cr

@@ -578,7 +578,7 @@ get "/search" do |env|
 
     case key
     when "channel", "user"
-      channel = value
+      channel = operator.split(":")[-1]
     when "content_type", "type"
       content_type = value
     when "date"

src/invidious/search.cr

@@ -51,12 +51,12 @@ alias SearchItem = SearchVideo | SearchChannel | SearchPlaylist
 def channel_search(query, page, channel)
   client = make_client(YT_URL)
 
-  response = client.get("/user/#{channel}")
+  response = client.get("/user/#{channel}?disable_polymer=1&hl=en&gl=US")
   document = XML.parse_html(response.body)
   canonical = document.xpath_node(%q(//link[@rel="canonical"]))
 
   if !canonical
-    response = client.get("/channel/#{channel}")
+    response = client.get("/channel/#{channel}?disable_polymer=1&hl=en&gl=US")
     document = XML.parse_html(response.body)
     canonical = document.xpath_node(%q(//link[@rel="canonical"]))
   end