Add "C02.02_phone_number_not_found" test scenario

[Masa8106]

What type of PR is this?

• correction
• tests

What this PR does / why we need it:

This PR is to add "C02.02_phone_number_not_found" test scenario

Which issue(s) this PR fixes:

Fixes #83

Special notes for reviewers:

My proposal is entirely aligned with the commonalities guideline, and it has a slightly different wording from wording which was proposed in PR#60 previously.

Changelog input

 release-note
- Add "C02.02_phone_number_not_found" test scenario

Additional documentation

None

[fernandopradocabrillo]

LGTM
thanks @Masa8106!

[Masa8106]

Hi, @eric-murray and @grgpapadopoulos , may I ask you to review this PR?

[grgpapadopoulos]

Hello @Masa8106,
does it make sense to you to add in the end of the msg:
"...but does not identify a valid phone number known to the operator"

[Masa8106]

Hi @grgpapadopoulos ,
Thank you for your suggestion. I think so far it is preferable to adhere the commonalities guidelines, which is to keep the msg as it is, as much as possible. What do you think?

[Masa8106]

@grgpapadopoulos, thank you for your review quickly and your approval.
Please let me merge this PR. Thank you.