[Bug]: Updating a referral set to a team with an incorrect key

[gordsport]

Problem encountered

It is possible to have a referral set created with Key-1 and to update it to make it a team using Key-2 - Key-2 then owns the team. This means that anyone joining the original keys referral set may join a team set up by someone else.

Observed behaviour

Command used by Key-2

./vegawallet_75_0 transaction send --wallet test --no-version-check --pubkey 10d9d4dccc3412ec13f9a86f583a648eb970d6e6f854033487873024f49ecede --network fairground '{
  "updateReferralSet": {
    "id": "6c6aa13e5fdc206418059d31a66d9cca70647291645efd95aa719433eee4e61e",
    "isTeam": true,
    "team": {
      "name": "VegaRocks like really",
      "teamUrl": "https://discord.com/channels/vegarocks",
      "avatarUrl": "https://vega-rocks/logo-360x360.jpg",
      "closed": false
    }
  }
}'

Expected behaviour

That only the owner of a referral set can update their referral to become a team

Steps to reproduce

1. Create a referral set with key-1
2. Using Key-2 update the referral set to become a team owned by Key-2
3. Using Key-3 join the referral link from Key-1
4. Observe that the user joining Key-1s referral actually goes into the Key-2s team

Software version

0.74.10

Failing test

No response

Jenkins run

No response

Configuration used

No response

Relevant log output

No response