Fix application icons (#20142)

fixes application chip (icon Name) in all setting tables

## After
<img width="1200" height="896" alt="image"
src="https://github.com/user-attachments/assets/bd377f47-1d52-4142-b904-f2ce90c1db78"
/>
<img width="1200" height="917" alt="image"
src="https://github.com/user-attachments/assets/f49cc742-f11e-47e3-86ed-34beffe493c7"
/>
<img width="1234" height="878" alt="image"
src="https://github.com/user-attachments/assets/2ab459de-5f9d-4d39-9490-eec4ed9ee432"
/>
<img width="1239" height="845" alt="image"
src="https://github.com/user-attachments/assets/3c1bf258-285a-47b9-a60d-05ba1564334d"
/>
<img width="1183" height="907" alt="image"
src="https://github.com/user-attachments/assets/715b2470-2d88-48e3-88ac-d3daf3451717"
/>
<img width="1300" height="912" alt="image"
src="https://github.com/user-attachments/assets/d7c829fa-bf1d-4f19-82de-a8bf29e22bfa"
/>

packages/twenty-docs/developers/extend/apps/data-model.mdx

@@ -77,7 +77,6 @@ export default defineApplication({
   universalIdentifier: '39783023-bcac-41e3-b0d2-ff1944d8465d',
   displayName: 'My Twenty App',
   description: 'My first Twenty app',
-  icon: 'IconWorld',
   applicationVariables: {
     DEFAULT_RECIPIENT_NAME: {
       universalIdentifier: '19e94e59-d4fe-4251-8981-b96d0a9f74de',