8450: Improve usability of selectable action items by supporting keyboard and double-click interactions

[aymane-harmaz]

This PR adds more interaction capabilities to tree items and checkbox tables:

• Tree items: Added support for expanding/collapsing via double-click and Enter key press.
• Checkbox table: Added support for enabling/disabling via Enter key press.

---

Progress

• Commit message must refer to an issue
• Change must be properly reviewed (1 review required, with at least 1 Committer)

Issue

• JMC-8450: Improve usability of selectable action items by supporting keyboard and double-click interactions (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jmc.git pull/682/head:pull/682
$ git checkout pull/682

Update a local copy of the PR:
$ git checkout pull/682
$ git pull https://git.openjdk.org/jmc.git pull/682/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 682

View PR using the GUI difftool:
$ git pr show -t 682

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jmc/pull/682.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back aharmaz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[mlbridge]

Webrevs

• 00: Full (bb29cd5f)