[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-front/src/modules/workflow/workflow-diagram/components/WorkflowDiagramBaseStepNode.tsx

@@ -7,8 +7,8 @@ import { WorkflowDiagramStepNodeData } from '@/workflow/workflow-diagram/types/W
 import styled from '@emotion/styled';
 import { Handle, Position } from '@xyflow/react';
 import React from 'react';
-import { capitalize } from 'twenty-shared';
-import { isDefined, Label, OverflowingTextWithTooltip } from 'twenty-ui';
+import { capitalize, isDefined } from 'twenty-shared';
+import { Label, OverflowingTextWithTooltip } from 'twenty-ui';
 
 type Variant = 'placeholder';
 

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowDiagramCanvasBase.tsx

@@ -29,7 +29,8 @@ import {
 import '@xyflow/react/dist/style.css';
 import React, { useEffect, useMemo, useRef } from 'react';
 import { useRecoilValue, useSetRecoilState } from 'recoil';
-import { THEME_COMMON, isDefined } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
+import { THEME_COMMON } from 'twenty-ui';
 
 const StyledResetReactflowStyles = styled.div`
   height: 100%;

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowDiagramCanvasEditableEffect.tsx

@@ -17,7 +17,8 @@ import { useLingui } from '@lingui/react/macro';
 import { OnSelectionChangeParams, useOnSelectionChange } from '@xyflow/react';
 import { useCallback } from 'react';
 import { useSetRecoilState } from 'recoil';
-import { IconBolt, isDefined, useIcons } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
+import { IconBolt, useIcons } from 'twenty-ui';
 
 export const WorkflowDiagramCanvasEditableEffect = () => {
   const { t } = useLingui();

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowDiagramCanvasReadonlyEffect.tsx

@@ -14,7 +14,8 @@ import { getWorkflowNodeIconKey } from '@/workflow/workflow-diagram/utils/getWor
 import { OnSelectionChangeParams, useOnSelectionChange } from '@xyflow/react';
 import { useCallback } from 'react';
 import { useSetRecoilState } from 'recoil';
-import { isDefined, useIcons } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
+import { useIcons } from 'twenty-ui';
 
 export const WorkflowDiagramCanvasReadonlyEffect = () => {
   const { getIcon } = useIcons();

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowDiagramEffect.tsx

@@ -11,7 +11,7 @@ import { getWorkflowVersionDiagram } from '@/workflow/workflow-diagram/utils/get
 import { mergeWorkflowDiagrams } from '@/workflow/workflow-diagram/utils/mergeWorkflowDiagrams';
 import { useEffect } from 'react';
 import { useRecoilCallback, useSetRecoilState } from 'recoil';
-import { isDefined } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
 
 export const WorkflowDiagramEffect = ({
   workflowWithCurrentVersion,

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowVersionVisualizer.tsx

@@ -1,7 +1,7 @@
 import { useWorkflowVersion } from '@/workflow/hooks/useWorkflowVersion';
 import { WorkflowDiagramCanvasReadonly } from '@/workflow/workflow-diagram/components/WorkflowDiagramCanvasReadonly';
 import '@xyflow/react/dist/style.css';
-import { isDefined } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
 
 export const WorkflowVersionVisualizer = ({
   workflowVersionId,

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowVersionVisualizerEffect.tsx

@@ -4,7 +4,7 @@ import { workflowDiagramState } from '@/workflow/workflow-diagram/states/workflo
 import { getWorkflowVersionDiagram } from '@/workflow/workflow-diagram/utils/getWorkflowVersionDiagram';
 import { useEffect } from 'react';
 import { useSetRecoilState } from 'recoil';
-import { isDefined } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
 
 export const WorkflowVersionVisualizerEffect = ({
   workflowVersionId,

packages/twenty-front/src/modules/workflow/workflow-diagram/components/WorkflowVisualizer.tsx

@@ -3,7 +3,7 @@ import { useWorkflowWithCurrentVersion } from '@/workflow/hooks/useWorkflowWithC
 import { WorkflowDiagramCanvasEditable } from '@/workflow/workflow-diagram/components/WorkflowDiagramCanvasEditable';
 import { WorkflowDiagramEffect } from '@/workflow/workflow-diagram/components/WorkflowDiagramEffect';
 import '@xyflow/react/dist/style.css';
-import { isDefined } from 'twenty-ui';
+import { isDefined } from 'twenty-shared';
 
 export const WorkflowVisualizer = ({
   targetableObject,