Referrals: Simplify sharing by just sharing text and url

[SergioEstevao]

| 📘 Part of: #2083 |
|:---:|

Fixes #

Simplify the sharing of the referral message by avoiding the duplication of the link URL.
Majority of standard system share ( Email, Message, Reminders, Notes) are able to handle the text and url as separate items so this removes the duplication of URL on the text part.

Some other systems like Instagran/Tumblr only handle the URL so no need to add the URL to the text item.

To test

1. Start the app and login with a Plus/Patron account
2. Ensure that you have the Referrals FF enabled
3. Go to profile
4. Tap on the gift icon on the top left
5. Tap on Share guest pass
6. Share on multiple systems and see one of the following:
   • The sharing shows the text followed by the URL, no duplication of the URL. Ex: mail, messages, reminders, WhatsApp
   • The sharing shows only the URL. Ex: Instagram

Checklist

• I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• I have considered adding unit tests for my changes.
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

[dangermattic]

	1 Message
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[danielebogo]

Tested and it worked!