Preserve digrams view box on update (#3499)

Signed-off-by: Ayoub LABIDI <[email protected]>

Author: ayolab

src/components/workspace/diagrams/nad/use-nad-diagram.ts

@@ -257,16 +257,16 @@ export const useNadDiagram = ({
         setGlobalError(undefined);
 
         // Update diagram from metadata
-        setDiagram({
+        setDiagram((prev) => ({
+            ...prev,
             type: DiagramType.NETWORK_AREA_DIAGRAM,
-            svg: null,
             nadConfigUuid: diagramMetadata.nadConfigUuid,
             filterUuid: diagramMetadata.filterUuid,
             voltageLevelIds: diagramMetadata.initialVoltageLevelIds || [],
             positions: [],
             voltageLevelToExpandIds: [],
             voltageLevelToOmitIds: [],
-        });
+        }));
 
         fetchDiagram();
         // eslint-disable-next-line react-hooks/exhaustive-deps

src/components/workspace/diagrams/sld/use-sld-diagram.ts

@@ -164,11 +164,14 @@ export const useSldDiagram = ({
 
         // Update diagram from diagramData
         const type = diagramMetadata.voltageLevelId ? DiagramType.VOLTAGE_LEVEL : DiagramType.SUBSTATION;
-        setDiagram({
-            ...diagramMetadata,
-            type,
-            svg: null,
-        } as Diagram);
+        setDiagram(
+            (prev) =>
+                ({
+                    ...prev,
+                    ...diagramMetadata,
+                    type,
+                }) as Diagram
+        );
 
         fetchDiagram();
         // eslint-disable-next-line react-hooks/exhaustive-deps