message: Fix the positioning of the context menu component
diff: @@ -10,9 +10,7 @@ import * as DomUtils from "../DomUtils";
  import * as ThemeTypes from "../../theme/Theme";
  import { MenuItem } from "./MenuItem";
  import { CheckboxMenuItem } from "./CheckboxMenuItem";
  -import * as Util from "./Util";
  import { Logger, getLogger } from "extraterm-logging";
  -import { findFixedPositionOffset } from "../DomUtils";
  import { ThemeableElementBase } from "../ThemeableElementBase";
  @@ -300,9 +298,8 @@ export class ContextMenu extends ThemeableElementBase {
  containerY = targetElementRect.top - containerRect.height;
  }
  - const offset = findFixedPositionOffset(container);
  - containerX -= offset.left;
  - containerY -= offset.top;
  + containerX -= coverRect.left;
  + containerY -= coverRect.top;
  container.style.left = "" + containerX + "px";
  container.style.top = "" + containerY + "px";
  