Revert "feat: optimize and stabilize string normalization in StringMatcher"

This reverts commit a52a6af.

Author: 4yinn

Flow.Launcher.Infrastructure/StringMatcher.cs

@@ -1,14 +1,11 @@
 using CommunityToolkit.Mvvm.DependencyInjection;
 using Flow.Launcher.Plugin.SharedModels;
 using System;
-using System.Buffers;
 using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
 using System.Globalization;
 using System.Linq;
 using System.Text;
 using Flow.Launcher.Infrastructure.UserSettings;
-using JetBrains.Annotations;
 
 namespace Flow.Launcher.Infrastructure
 {
@@ -259,23 +256,14 @@ public MatchResult FuzzyMatch(string query, string stringToCompare, MatchOption
         };
         public static string Normalize(string value)
         {
-            if(string.IsNullOrEmpty(value)) return value;
-            char[] arrayFromPool = null;
-            Span<char> buffer = value.Length <= 512 ? stackalloc char[value.Length] : (arrayFromPool = ArrayPool<char>.Shared.Rent(value.Length));
-            try
+            Span<char> buffer = stackalloc char[value.Length];
+            for (int i = 0; i < value.Length; i++)
             {
-                for (int i = 0; i < value.Length; i++)
-                {
-                    var c = char.ToLowerInvariant(value[i]);
-                    buffer[i] = AccentMap.TryGetValue(c, out var mapped) ? mapped : c;
-                }
-                return new string(buffer.Slice(0, value.Length));
-            }
-            finally
-            {
-                if(arrayFromPool != null)
-                    ArrayPool<char>.Shared.Return(arrayFromPool);
+                var c = char.ToLowerInvariant(value[i]);
+                buffer[i] = AccentMap.TryGetValue(c, out var mapped) ? mapped : c;
             }
+
+            return new string(buffer);
         }
         private static bool IsAcronym(string stringToCompare, int compareStringIndex)
         {