SuperSelect::Multiple - Fix grouped options with show selected display

[dchyun]

📌 Summary

If merged, this PR would enhance the display of OptionGroup options in the SuperSelect::Multiple, when only selected options are shown.

PREVIEW

🛠️ Detailed description

Currently in the OptionGroup of the Super::Select::Multiple, when the "show selected" button is used to only show selected options, if no options are selected the group and sub-group titles are shown with no options.

This differs from the pattern used on super selects that do not contain groups. In those instances there is nothing shown in the menu besides the noMatchesMessage.

In this PR we have made it so when "show selected" is active, the group or sub-group title of an option is only visible when an option in that group is selected. If a group / sub-group contains no selection options then their titles are not shown.

📸 Screenshots

"Show selected" with no options selected

Before

After

"Show selected" with some options selected

Before

After

🔗 External links

Jira ticket: HDS-4775

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👀 Component checklist

• Percy was checked for any visual regression
• A changelog entry was added via Changesets if needed (see templates here)

💬 Please consider using conventional comments when reviewing this PR.

📋 PCI review checklist

• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've worked with GRC to document the impact of any changes to security controls.
  Examples of changes to controls include access controls, encryption, logging, etc.
• If applicable, I've worked with GRC to ensure compliance due to a significant change to the in-scope PCI environment.
  Examples include changes to operating systems, ports, protocols, services, cryptography-related components, PII processing code, etc.

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[KristinLBradley]

I agree with @shleewhite I can't think of a better way to select these using CSS than what you have

[jorytindall]

Interesting, this is a nice improvement! We don't really have the concept of grouped options in Figma (at least from a layout perspective), so I don't think any changes are needed in design tooling.