nb-select overlay width is not equal to the width of the select element it self when used inside nb-card.

### Issue type

* [x] bug report

### Issue description

**Current behavior:**
nb-select overlay width is not equal to the width of the select element it self when used inside nb-card.

**Expected behavior:**
the overlay must have the same width as much as the nb-select have.

**Steps to reproduce:**
Put(Use) the nb-select element inside a nb-card element.