[CHORE] Avoid isDefined duplicated reference, move it to twenty-shared (#9967)

# Introduction
Avoid having multiple `isDefined` definition across our pacakges
Also avoid importing `isDefined` from `twenty-ui` which exposes a huge
barrel for a such little util function

## In a nutshell
Removed own `isDefined.ts` definition from `twenty-ui` `twenty-front`
and `twenty-server` to move it to `twenty-shared`.
Updated imports for each packages, and added explicit dependencies to
`twenty-shared` if not already in place

Related PR https://github.com/twentyhq/twenty/pull/9941

packages/twenty-chrome-extension/src/options/App.tsx

@@ -1,8 +1,8 @@
 import { useEffect, useState } from 'react';
 
+import { isDefined } from 'twenty-shared';
 import Settings from '~/options/Settings';
 import Sidepanel from '~/options/Sidepanel';
-import { isDefined } from '~/utils/isDefined';
 
 const App = () => {
   const [currentScreen, setCurrentScreen] = useState('');

packages/twenty-chrome-extension/src/options/Settings.tsx

@@ -1,10 +1,10 @@
-import { useEffect, useState } from 'react';
 import styled from '@emotion/styled';
+import { useEffect, useState } from 'react';
 
 import { MainButton } from '@/ui/input/button/MainButton';
 import { TextInput } from '@/ui/input/components/TextInput';
+import { isDefined } from 'twenty-shared';
 import { clearStore } from '~/utils/apolloClient';
-import { isDefined } from '~/utils/isDefined';
 
 const StyledWrapper = styled.div`
   align-items: center;

packages/twenty-chrome-extension/src/options/Sidepanel.tsx

@@ -1,8 +1,8 @@
-import { useCallback, useEffect, useRef, useState } from 'react';
 import styled from '@emotion/styled';
+import { useCallback, useEffect, useRef, useState } from 'react';
 
 import { MainButton } from '@/ui/input/button/MainButton';
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 const StyledIframe = styled.iframe`
   display: block;

packages/twenty-chrome-extension/src/options/modules/ui/input/components/Toggle.tsx

@@ -1,8 +1,8 @@
-import { useEffect, useState } from 'react';
 import styled from '@emotion/styled';
 import { motion } from 'framer-motion';
+import { useEffect, useState } from 'react';
 
-import { isDefined } from '~/utils/isDefined';
+import { isDefined } from 'twenty-shared';
 
 export type ToggleSize = 'small' | 'medium';