In between date operator breaks exposed filter's rendering

Problem/Motivation

Steps to reproduce:

1. Create 2 date (date and time) fields and name them Start Date and End Date
2. Create a view (content, users, whatever) and add those two new fields to be displayed, say, in a table
3. Add them in your filter criteria - Pick is less than or is greater than for test purposes
4. Expose them both
5. Confirm the view renders fine
6. Edit the Start date filter criterion, and pick in between instead
7. Confirm the exposed filter is now messed up

Here's what visually happens before:

And after:

Proposed resolution

TBD

Remaining tasks

TBD

User interface changes

The In between date operator now renders exposed filters just fine, inline.

API changes

None expected.

Data model changes

TBD