fix(profile): ensure addresses are not equal for MsgAddValidatorOperatorAddress sim

[aljo242]

Closes #725

What does this PR does?

• Add check to ensure that sim addresses are not the same

[codecov]

Codecov Report

Merging #727 (21f3ba8) into develop (80ea112) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop     #727      +/-   ##
===========================================
- Coverage    11.20%   11.20%   -0.01%     
===========================================
  Files          278      278              
  Lines        60785    60787       +2     
===========================================
  Hits          6809     6809              
- Misses       53791    53793       +2     
  Partials       185      185              

Impacted Files	Coverage Δ
x/profile/simulation/simulation.go	0.00% <0.00%> (ø)

[giunatale]

question: should the ValidatorOperatorAddress not be a user (e.g. spn1...) address but rather a valoper (e.g. spnvaloper1...) address?

[lumtis]

question: should the ValidatorOperatorAddress not be a user (e.g. spn1...) address but rather a valoper (e.g. spnvaloper1...) address?

We use spn prefix for simplicity since the message to add this address must contact a AccAddress to check signature. The xxvaloper.. format is what you will have on the testnet, the address is converted when the monitoring IBC packet is received