Fix tests for error color

Author: norascheuch

extensions/ql-vscode/test/vscode-tests/no-workspace/query-history/query-history.test.ts

@@ -1709,7 +1709,12 @@ describe("query-history", () => {
         });
 
         const treeItem = await historyTreeDataProvider.getTreeItem(mockQuery);
-        expect(treeItem.iconPath).toEqual(new vscode.ThemeIcon("error"));
+        expect(treeItem.iconPath).toEqual(
+          new vscode.ThemeIcon(
+            "error",
+            new vscode.ThemeColor("errorForeground"),
+          ),
+        );
       });
 
       it("should get a tree item that failed before creating any results", async () => {
@@ -1719,7 +1724,12 @@ describe("query-history", () => {
         });
 
         const treeItem = await historyTreeDataProvider.getTreeItem(mockQuery);
-        expect(treeItem.iconPath).toEqual(new vscode.ThemeIcon("error"));
+        expect(treeItem.iconPath).toEqual(
+          new vscode.ThemeIcon(
+            "error",
+            new vscode.ThemeColor("errorForeground"),
+          ),
+        );
       });
 
       it("should get a tree item that is in progress", async () => {