List: the SPACE key doesn't work inside the List header for Input fields

[Lukas742]

Bug Description

When rendering an Input inside a List header slot, it's not possible to type in the SPACE key.

Expected Behavior

It should be possible to use SPACE to add an whitespace within an input field inside a list header.

Steps to Reproduce

1. Go to codeSandbox
2. Try to add a whitespace within the first input field. --> It's not working, as SPACE is not computed
3. Try to add a whitespace within the second input field. --> It's working, because of the custom keydown event

Isolated Example

https://codesandbox.io/s/ui5-webcomponents-forked-xxtib?file=/src/index.js

Context

• UI5 Web Components version: 1.0.0-rc.15

This issue is similar to #3517 and #3390

[plamenivanov91]

Hello @SAP/ui5-webcomponents-topic-rl,

The issue is reproducible with the latest rc with the provided snippet.

Kind Regards,
Plamen

[niyap]

Hello @SAP/ui5-webcomponents-topic-p,

The root cause of the reported issue is in the ui5-list component. On keydown, when the key is SPACE:
_onkeydown(event) {
if (isSpace(event)) {
event.preventDefault(); // prevent scroll
}
and that causes the issue.
We have had similar issue in the ui5-table. Here is a reference where you can check the solution used:
#3393

Could you please look over?

Thank you in advance!

Kind Regards,
Niya