[fix] TimePicker/Combobox filtering

[brandonlenz]

ReactUSWDS Version & USWDS Version:

2.9.0

Describe the bug

Filtering works differently for the TimePicker (possibly due to combobox filtering changes from 2.8.1 to 2.9.0)

The current TimePicker excludes options when there is no matching item (it filters very strictly). The USWDS TimePicker does not filter out (by hiding) items that do not match. Instead it focuses the first item that does match, if any.

To Reproduce
Steps to reproduce the behavior:

1. Go to the ReactUSWDS implementation in storybook and filter using a letter
2. Go to the USWDS implementation and filter using the same input and notice a difference in options

Expected behavior

The filtering behavior should be identical to the USWDS implementation

Screenshots

ReactUSWDS implementation:

USWDS Implementation:

Additional context

• Truss Slack Thread: https://trussworks.slack.com/archives/C0122MPMXL3/p1617892491017200