Everywhere: Add sv suffix to strings relying on StringView(char const*)

Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).

No functional changes.

Userland/Libraries/LibWeb/HTML/DOMParser.cpp

@@ -35,7 +35,7 @@ NonnullRefPtr<DOM::Document> DOMParser::parse_from_string(String const& string,
 
         // 4. Start parser and let it run until it has consumed all the characters just inserted into the input stream.
         // FIXME: This is to match the default URL. Instead, pass in this's relevant global object's associated Document's URL.
-        parser->run("about:blank");
+        parser->run("about:blank"sv);
     } else {
         // -> Otherwise