feat: add keepFilter option

[sissbruecker]

Description

Adds Flow API for the new multi-select combo box keepFilter option.

Closes vaadin/web-components#5930

WC PR: vaadin/web-components#7063

Type of change

• Feature

[sonarcloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

5 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[vaadin-bot]

Hi @sissbruecker and @sissbruecker, when i performed cherry-pick to this commit to 23.4, i have encountered the following issue. Can you take a look and pick it manually?
Error Message:
Error: Command failed: git cherry-pick ff5c995
error: could not apply ff5c995... feat: add keepFilter option (#5953)
hint: After resolving the conflicts, mark them with
hint: "git add/rm ", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.4.0.alpha2 and is also targeting the upcoming stable 24.4.0 version.

[vaadin-bot]

This ticket/PR has been released with Vaadin 23.4.0.alpha2 and is also targeting the upcoming stable 23.4.0 version.