LibUnicode: Return a String from Unicode normalization

Author: https://github.com/trflynn89
Commit: 58bc831750
Pull-request: https://github.com/SerenityOS/serenity/pull/17014
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibUnicode/Normalize.h

@@ -6,11 +6,11 @@
 
 #pragma once
 
-#include <AK/DeprecatedString.h>
 #include <AK/Error.h>
 #include <AK/Forward.h>
 #include <AK/Optional.h>
 #include <AK/Span.h>
+#include <AK/String.h>
 #include <AK/StringView.h>
 #include <LibUnicode/Forward.h>
 
@@ -29,6 +29,6 @@ enum class NormalizationForm {
 NormalizationForm normalization_form_from_string(StringView form);
 StringView normalization_form_to_string(NormalizationForm form);
 
-ErrorOr<DeprecatedString> normalize(StringView string, NormalizationForm form);
+ErrorOr<String> normalize(StringView string, NormalizationForm form);
 
 }