Can not set the tabindex attribute on a ngbDropdownItem

[Pigeo]

Bug description:

I have the following HTML tag in the template of my Component:
<button [attr.data-cy]="'view-' + view.key" (click)="changeView(view.key)" *ngFor="let view of views" ngbDropdownItem role="menuitem" tabindex="1">

However, the HTML code in the rendered web page contains the following:
<button _ngcontent-mvw-c33="" ngbdropdownitem="" role="menuitem" tabindex="0" class="dropdown-item ng-star-inserted" data-cy="view-BASIC">

i.e. ng-boostrap has replaced my tabindex="1" with tabindex="0"

NB: the corresponding ngbDropdownToggle button has tabindex="1" and that's why I need to also have tabindex="1" on all its children ngbDropdownItems in order to have the correct expected behavior when navigating with TAB key.

Expected behavior:

Bootstrap should preserve the tabindex provided by the user - OR - it should set the tabindex of the ngbDropdownItems to the same value that the tabindex of the corresponding ngbDropdownToggle.

Link to minimally-working StackBlitz that reproduces the issue:

https://stackblitz.com/edit/angular-kuqznx?file=src%2Fapp%2Fdropdown-basic.html

Versions of Angular, ng-bootstrap and Bootstrap:

Angular: 15.2.8

ng-bootstrap: 14.2.0

Bootstrap: 5.3.2