8469: Should make rules and page heading accessible through keyboard in JFR overview page

[aymane-harmaz]

This PR makes it possible to reach JFR result pages and expand / collapse rule text on the JFR result overview using keyboard enter and tab keys.

---

Progress

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

Issue

• JMC-8469: Should make rules and page heading accessible through keyboard in JFR overview page (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jmc.git pull/683/head:pull/683
$ git checkout pull/683

Update a local copy of the PR:
$ git checkout pull/683
$ git pull https://git.openjdk.org/jmc.git pull/683/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 683

View PR using the GUI difftool:
$ git pr show -t 683

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jmc/pull/683.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 (e3b3c645)