fix: Input fields to have expected behaviour in case of empty / only whitespaces string (#6736)

# ISSUE
- Closes #6734
- Closes #6633
- Closes #6733
- Closes #6816

# Description

- [x] Don't allow Empty (whitespaces) Objects to Create, all the
keyboard shortcuts are also handled for this.



https://github.com/user-attachments/assets/1c9add4e-f13f-458b-8f76-63bd868413a2



https://github.com/user-attachments/assets/e72b6ee3-74e4-4517-a230-3eb10db80dc7

Note: we do have one other issue with FullName field #6740 Inorder to
test use **shift**.




- [x] Api Keys Input Name Field -> New and Detail View Name field
shouldn't be empty or string with whitespaces, we won't able to have
whitespaces in both. **Try Entering just spaces**



https://github.com/user-attachments/assets/b521b49f-648c-4585-9d15-8ff4faed3c3a


- [x] Similar to above, Empty webhook endpoint url under
**/settings/developers/webhooks/new** won't be created. **Try Entering
just spaces**

- [x] New Functions or Updating Functions will not able to have
whitespaces, empty string as Name. **Try Entering just spaces**



https://github.com/user-attachments/assets/09fcf394-c6d9-4080-8efd-462b054a22d0



- [x] under **settings/workspace-members** changes will lead and solve
that user won't be able to enter Invite by email as just whitespaces +
button is now getting disabled when there is no correct email. **Try
Entering just spaces**



https://github.com/user-attachments/assets/b352edfa-113b-4645-80fd-db6f120ab5db



- [x] Text Input Field, will not allow to start entering with
whitespaces and won't take just whitespaces as value spaces between
words will work.


https://github.com/user-attachments/assets/8c1a0812-45be-4ed2-bd3d-bb4f92147976

- [x] Similarly Number works as per above including shortcuts. 


https://github.com/user-attachments/assets/9f69cc87-5c3c-43ee-93c4-fa887bc0d7ee


- [x] Similarly FullName field works as per above including shortcuts



https://github.com/user-attachments/assets/7bb006b2-abf7-44cd-a214-7a2fc68df169

- [x] Pasting fullName is been Improved. 

- Case 1 (Two Words): If there are exactly two words, return them as is.
- Case 2 (More than Two Words): If there are more than two words, return
the first two words only.
- Case 3 (One Word): If there is only one word, return it as the first
name, with an empty string as the last name.
- WhiteSpaces have been handled. 

```
console.log(splitFullName("John     Doe")); // ["John", "Doe"]
console.log(splitFullName("        ")); // ["", ""]
console.log(splitFullName("John")); // ["John", ""]
console.log(splitFullName("  John   Doe  ")); // ["John", "Doe"]
console.log(splitFullName("John Michael  Andrew Doe")); // ["John", "Michael"]
```

---------

Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-front/src/utils/string/turnIntoEmptyStringIfWhitespacesOnly.ts

@@ -0,0 +1,3 @@
+export const turnIntoEmptyStringIfWhitespacesOnly = (value: string): string => {
+  return value.trim().length > 0 ? value : '';
+};

packages/twenty-front/src/utils/string/turnIntoUndefinedIfWhitespacesOnly.ts

@@ -0,0 +1,5 @@
+export const turnIntoUndefinedIfWhitespacesOnly = (
+  value: string,
+): string | undefined => {
+  return value.trim() === '' ? undefined : value.trim();
+};