refactor(table): Remove table from mediator during disposal

Signed-off-by: Trae Yelovich <[email protected]>

packages/zowe-explorer-api/src/vscode/ui/TableView.ts

@@ -13,6 +13,7 @@ import { UriPair, WebView } from "./WebView";
 import { Event, EventEmitter, ExtensionContext, env } from "vscode";
 import { randomUUID } from "crypto";
 import { diff } from "deep-object-diff";
+import { TableMediator } from "./utils/TableMediator";
 
 export namespace Table {
     /* The types of supported content for the table and how they are represented in callback functions. */
@@ -500,8 +501,10 @@ export namespace Table {
 
         /**
          * Closes the table view and marks it as disposed.
+         * Removes the table instance from the mediator if it exists. 
          */
         public dispose(): void {
+            TableMediator.getInstance().removeTable(this);
             super.dispose();
         }
     }

packages/zowe-explorer-api/src/vscode/ui/utils/TableMediator.ts

@@ -9,7 +9,7 @@
  *
  */
 
-import { Table } from "../TableView";
+import type { Table } from "../TableView";
 
 /**
  * Mediator class for managing and accessing shared tables in Zowe Explorer.
@@ -42,7 +42,7 @@ import { Table } from "../TableView";
  * Tables can only be removed by the extender that has contributed them using {@link TableMediator.deleteTable}.
  * This establishes a read-only relationship between the mediator and extenders that have not contributed the table they are trying to access.
  *
- * **Note** that this does not prevent an extender with access to the ID from disposing the table once they've received access to the instance.
+ * **Note** that this does not prevent an extender with access to the ID from disposing the table, once they've received access to the instance.
  */
 
 export class TableMediator {