[FIX] web: popovers do close correctly in kanban

This commit fixes a bug where popovers could stack up in kanban if one
kept opening them. By changing the event to close popovers from a
mousedown event to a pointerdown event, it is no longer stopped by the
draggable hook and executes correctly.

closes odoo/odoo#136890

X-original-commit: 76665eb400168a6fd6e2b5f5fe099c8c4e9c8a5e
Signed-off-by: Michaël Mattiello (mcm) <mcm@odoo.com>
Signed-off-by: Julien Carion (juca) <juca@odoo.com>

addons/web/static/src/core/popover/popover_controller.js

@@ -24,7 +24,7 @@ export class PopoverController extends Component {
     setup() {
         if (this.props.target.isConnected) {
             this.popoverRef = useChildRef();
-            useExternalListener(window, "mousedown", this.onClickAway, { capture: true });
+            useExternalListener(window, "pointerdown", this.onClickAway, { capture: true });
             useHotkey("escape", () => this.props.close());
             const targetObserver = new MutationObserver(this.onTargetMutate.bind(this));
             targetObserver.observe(this.props.target.parentElement, { childList: true });