Added the option to display optional phone number

[mar2n]

Background

The phoneNumberInput at the Swedish payment page are optional for not-main travellers, but currently not visible for the user that it is

Solution

Add prop to be able to show that the field is optional

UU checks

• It is possible to use the keyboard to reach your changes
• It is possible to enlarge the text 400% without losing functionality
• It works on both mobile and desktop
• It works in both Chrome, Safari and Firefox
• It works with VoiceOver
• There are no errors in aXe / SiteImprove-plugins / Wave
• Sanity documentation has been / will be updated (if neccessary)
• Documentation version has been bumped (package.json in docs)

Note: To trigger pipeline for the documentation site (spor.vy.no) you need to bump the version.

How to test

Technical change. No change on current inputs, but able to add the prop isOptional={true} to see the new text

Screenshots

Before	After

[changeset-bot]

🦋 Changeset detected

Latest commit: 06f8d91

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@vygruppen/spor-react	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[mar2n]

Kjørte npx changeset. Er det riktig og nødvendig?
Oppdaterte ikke versjon i package.json, burde det være med?

[alicemacl]

Liten endring i changeset, ser ellers bra ut.

Ja, man må ha changeset hver eneste gang man endrer en pakke.

Package må bare oppdateres dersom man ikke endrer en pakke. Skal gjøre det mer klart i changeset.

Les mer om changeset, hvilket du skal velge og hvordan det fungerer her:

https://spor.vy.no/guides/releasing-new-versions