Search Page date range and sort-by form elements have incorrect labeling

[sdellis]

Summary or User Story

A form label can only apply to one element via it's id.

Right now, sort-by refers to its select element via name when it should use id.
There should also be labels for each of the date range inputs. We can hide them from visual display, but screen readers will need to be able to announce the field.

Acceptance Criteria

• The UI implemented for this issue meets accessibility requirements

First step

Go to the search page and look in the Accessibility panel of Devtools.

This section can be completed by the DLS team