[Canvas] Force embeddables to refresh when renderable reevaluated (#67419)

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/legacy/plugins/canvas/canvas_plugin_src/expression_types/embeddable.ts

@@ -12,9 +12,23 @@ export const EmbeddableExpressionType = 'embeddable';
 export { EmbeddableTypes, EmbeddableInput };
 
 export interface EmbeddableExpression<Input extends EmbeddableInput> {
+  /**
+   * The type of the expression result
+   */
   type: typeof EmbeddableExpressionType;
+  /**
+   * The input to be passed to the embeddable
+   */
   input: Input;
+  /**
+   * The type of embeddable
+   */
   embeddableType: string;
+  /**
+   * Timestamp. Needed to get a different result after each time the expression is evaluated
+   * to force a reload of the embeddables internal data
+   */
+  generatedAt: number;
 }
 
 export const embeddableType = (): ExpressionType<

x-pack/legacy/plugins/canvas/canvas_plugin_src/functions/common/saved_map.ts

@@ -116,6 +116,7 @@ export function savedMap(): ExpressionFunction<'savedMap', Filter | null, Argume
           hiddenLayers: args.hideLayer || [],
         },
         embeddableType: EmbeddableTypes.map,
+        generatedAt: Date.now(),
       };
     },
   };

x-pack/legacy/plugins/canvas/canvas_plugin_src/functions/common/saved_search.ts

@@ -45,6 +45,7 @@ export function savedSearch(): ExpressionFunction<'savedSearch', Filter | null,
           ...buildEmbeddableFilters(filters),
         },
         embeddableType: EmbeddableTypes.search,
+        generatedAt: Date.now(),
       };
     },
   };

x-pack/legacy/plugins/canvas/canvas_plugin_src/functions/common/saved_visualization.ts

@@ -50,6 +50,7 @@ export function savedVisualization(): ExpressionFunction<
           ...buildEmbeddableFilters(filters),
         },
         embeddableType: EmbeddableTypes.visualization,
+        generatedAt: Date.now(),
       };
     },
   };

x-pack/legacy/plugins/canvas/canvas_plugin_src/renderers/embeddable/embeddable.tsx

@@ -108,6 +108,7 @@ const embeddable = () => ({
       });
     } else {
       embeddablesRegistry[uniqueId].updateInput(input);
+      embeddablesRegistry[uniqueId].reload();
     }
   },
 });