Add icons to Record Page Layout tabs (#15871)

## Demo


https://github.com/user-attachments/assets/71ce776a-8d59-4b2c-8579-185fdd749f8f

Closes https://github.com/twentyhq/core-team-issues/issues/1812

packages/twenty-front/src/modules/page-layout/constants/DefaultWorkflowVersionPageLayout.ts

@@ -21,6 +21,7 @@ export const DEFAULT_WORKFLOW_VERSION_PAGE_LAYOUT: PageLayout = {
       __typename: 'PageLayoutTab',
       id: 'workflow-version-tab-fields',
       title: 'Fields',
+      icon: 'IconList',
       position: 100,
       layoutMode: 'vertical-list',
       pageLayoutId: DEFAULT_WORKFLOW_VERSION_PAGE_LAYOUT_ID,
@@ -54,6 +55,7 @@ export const DEFAULT_WORKFLOW_VERSION_PAGE_LAYOUT: PageLayout = {
       __typename: 'PageLayoutTab',
       id: 'workflow-version-tab-flow',
       title: 'Flow',
+      icon: 'IconSettings',
       position: 200,
       layoutMode: 'canvas',
       pageLayoutId: DEFAULT_WORKFLOW_VERSION_PAGE_LAYOUT_ID,