Added a util helper to remove accent and case to improve search logic (#14533)

# [WIP] Make Local Search Non-Accent-Sensitive

fixes(#14468)

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**Description:**  
This PR adds accent- and case-insensitive search for the
**SettingsWorkspaceMembers** component’s local search. It ensures that
searching for names or emails works correctly even if the user types
letters without accents.

**Implementation:**  
- Added a helper util: `removeAccentsAndCase(text: string)`  
- This util:
  - Normalizes text to NFD form
  - Removes diacritics (accents)
  - Converts text to lowercase
- Replaced current `.includes(searchFilter)` logic with a normalized
comparison:


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### Video ->

[Screencast from 2025-09-16
16-42-50.webm](https://github.com/user-attachments/assets/7035906c-9c5d-414d-81e5-74e53803628a)


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Opening a draft pr for initial strategy review before extending it to
other components.

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Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-front/src/modules/spreadsheet-import/utils/spreadsheetImportGetSubFieldOptions.ts

@@ -1,14 +1,17 @@
 import { type FieldMetadataItem } from '@/object-metadata/types/FieldMetadataItem';
 import { type SpreadsheetImportFieldOption } from '@/spreadsheet-import/types/SpreadsheetImportFieldOption';
+import { normalizeSearchText } from '~/utils/normalizeSearchText';
 
 export const getSubFieldOptions = (
   fieldMetadataItem: FieldMetadataItem,
   options: readonly Readonly<SpreadsheetImportFieldOption>[],
   searchFilter: string,
 ): readonly Readonly<SpreadsheetImportFieldOption>[] => {
-  return options.filter(
-    (option) =>
+  return options.filter((option) => {
+    const searchNormalized = normalizeSearchText(searchFilter);
+    return (
       option.fieldMetadataItemId === fieldMetadataItem.id &&
-      option.label.toLowerCase().includes(searchFilter.toLowerCase()),
-  );
+      normalizeSearchText(option.label).includes(searchNormalized)
+    );
+  });
 };