Add phone_number.country_code and address.full_address in locale sv - #2965

Motivation / Background

I'm Swedish and noticed error when tested it to generate Swedish phone_number and addresses.
This Pull Request has been created to correct phone_number.country_code and address.full_address in locale sv.

Additional information

locale sv phone_number.country_code should be +46, reference https://countrycode.org/sweden

sv do not have #{state_abbr} as in default locale, the format is described here https://en.wikipedia.org/wiki/Postal_codes_in_Sweden#Format

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug, refactor something, or add a feature.
• Tests and Rubocop are passing before submitting your proposed changes.

If you're proposing a new generator or locale:

• Double-check the existing generators documentation to make sure the new generator you want to add doesn't already exist.
• You've reviewed and followed the Contributing guidelines.