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/LibLine/InternalFunctions.cpp

@@ -314,7 +314,7 @@ void Editor::enter_search()
             return false;
         });
 
-        auto search_prompt = "\x1b[32msearch:\x1b[0m ";
+        auto search_prompt = "\x1b[32msearch:\x1b[0m "sv;
 
         // While the search editor is active, we do not want editing events.
         m_is_editing = false;