Numeric value on exposed filter form is missing accessible name

Problem/Motivation

The value textfield on numeric exposed filters is missing an accessible name.

It appears that the problem only occurs when the operator is also exposed.

Steps to reproduce

1. Install with standard profile.
2. Edit the Frontpage view.
3. Under the Filter criteria section, click "Add".
4. In the list of fields that appears, select "ID" (in the Content category).
5. Click "Add and configure filter criteria".
6. Select "Expose this filter to visitors, to allow them to change it".
7. Select "Expose operator"
8. Click "Apply"
9. Confirm that the new exposed filter appears in the preview.
10. Run a test with Axe or Accessibility Insights.
11. Click "Save"
12. Go to /node.
13. Run a test with Axe or Accessibility Insights.

Proposed resolution

1. Ensure that the element has a #title property with appropriate text.
2. Hide the label visually with '#title_display' => 'invisible'.

The error appears to be in NumericFilter::valueForm

Remaining tasks

User interface changes

Accessible names are added for the affected elements.

Introduced terminology

API changes

Data model changes

Release notes snippet