[4437] Fix DialogContextProvider missing

Bug: #4437
Signed-off-by: Michaël Charfadi <[email protected]>

CHANGELOG.adoc

@@ -59,6 +59,7 @@ See https://github.com/mui/material-ui/issues/15618[this link] for additional de
 Before this contribution, migration participants were executed if the project being opened was a studio.
 Now they are executed for some data if the data was coming from a studio too.
 - https://github.com/eclipse-sirius/sirius-web/issues/4422[#4422] [diagram] Prevent application crash when an edge path is malformed during node moves
+- https://github.com/eclipse-sirius/sirius-web/issues/4437[#4437] [diagram] Fix selection dialog not opening
 
 
 === New Features

packages/diagrams/frontend/sirius-components-diagrams/src/representation/DiagramSubscriptionProvider.tsx

@@ -15,6 +15,7 @@ import LinearProgress from '@mui/material/LinearProgress';
 import Typography from '@mui/material/Typography';
 import { memo, useEffect, useState } from 'react';
 import { DiagramContext } from '../contexts/DiagramContext';
+import { DialogContextProvider } from '../dialog/DialogContext';
 import {
   GQLDiagramEventPayload,
   GQLDiagramRefreshedEventPayload,
@@ -67,15 +68,17 @@ export const DiagramSubscriptionProvider = memo(
             payload: payload,
             readOnly,
           }}>
-          <div
-            style={{ display: 'inline-block', position: 'relative' }}
-            data-representation-kind="diagram"
-            data-representation-label={state.diagramRefreshedEventPayload.diagram.metadata.label}>
-            <DiagramRenderer
-              key={state.diagramRefreshedEventPayload.diagram.id}
-              diagramRefreshedEventPayload={state.diagramRefreshedEventPayload}
-            />
-          </div>
+          <DialogContextProvider>
+            <div
+              style={{ display: 'inline-block', position: 'relative' }}
+              data-representation-kind="diagram"
+              data-representation-label={state.diagramRefreshedEventPayload.diagram.metadata.label}>
+              <DiagramRenderer
+                key={state.diagramRefreshedEventPayload.diagram.id}
+                diagramRefreshedEventPayload={state.diagramRefreshedEventPayload}
+              />
+            </div>
+          </DialogContextProvider>
         </DiagramContext.Provider>
       </StoreContextProvider>
     );