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/Origin.h

@@ -78,7 +78,7 @@ public:
         result.append(protocol());
 
         // 3. Append "://" to result.
-        result.append("://");
+        result.append("://"sv);
 
         // 4. Append origin's host, serialized, to result.
         result.append(host());