App: [$500] [Remove Free Workspace Creation] Update Welcome Message on NewDot

• Held on https://github.com/Expensify/App/issues/37149 so that the new notifications are in place on the server
• Held on https://github.com/Expensify/App/issues/37151 so that all collect policies created in NewDot are accessible in NewDot

Update the workspace.inviteMessage.welcomeNote translation key in en.ts and es.ts to be:

#[senders display name] ([senders login]) invited you to Expensify
Hi there -

To join "[workspace name]", [click here](link) to start tracking your expenses!

They also added the message:
[Input message]

Additionally, here is the workspace description:
[Input description]

• The first line of the message must be proceeded with the “#” so that it utilizes the backend functionality for custom subject lines (eg. the first line of the message gets parsed out and used as the subject for email notifications)
• The “[Input message]” part of the message template is what currently exists in workspace.inviteMessage.welcomeNote
• The template will need some new variables:
  • Senders display name and login
  • Workspace description