Issue selector: filter dropdown is not labelled

Issue Summary

In Issue selector the filter dropdown is not labelled.

Steps to Reproduce

1. Navigate to Jira.
2. Click on "Create" button in the header region.
3. Navigate to "Issue" field inside modal dialog.

1. Click on "Select issue [+]" button present next to the input.
2. Navigate to the dropdown & observe that it is not labelled. 

Actual Results

Inside issue selector window, the dropdown to select filters is not labelled. This makes screen reader users difficult to understand the purpose of the dropdown field.

Screenshot

Expected Results

The dropdown field should have descriptive label which conveys the purpose to the users. 

A label such as "Select filter" can be provided visually on the page or as off-screen text inside <label> element or via aria-label attribute.

Ensure that the label is programatically associated with the dropdown with for/id relationship.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available