Convert LATIN LETTER L WITH STROKE to LATIN L

Because polish letter "ł" is not accented letter but separate character `normalize("NFD")` doesn't work so we need another approach.

See also:
 - https://www.fileformat.info/info/unicode/char/0142/index.htm
 - https://www.fileformat.info/info/unicode/char/0141/index.htm

tests/operations/tests/Unicode.mjs

@@ -80,4 +80,15 @@ TestRegister.addTests([
             },
         ],
     },
+    {
+        name: "Remove Diacritics: polish letter ł",
+        input: "zażółć gęślą jaźń ZAŻÓŁĆ GĘŚLĄ JAŹŃ",
+        expectedOutput: "zazolc gesla jazn ZAZOLC GESLA JAZN",
+        recipeConfig: [
+            {
+                "op": "Remove Diacritics",
+                "args": []
+            },
+        ],
+    },
 ]);