MESH-1873/ Identity.revoke_claim doesn't check if the claim exists

[JMoore96]

changelog

modified logic

• add ensure check for revoke_claim to make sure claim exist

[codecov[bot]]

Codecov Report

Merging #1361 (36e35f8) into develop (17a8cd5) will decrease coverage by 0.00%. The diff coverage is 50.00%.

:exclamation: Current head 36e35f8 differs from pull request most recent head 75cc335. Consider uploading reports for the commit 75cc335 to get more accurate results

@@             Coverage Diff             @@
##           develop    #1361      +/-   ##
===========================================
- Coverage    43.56%   43.55%   -0.01%     
===========================================
  Files          140      140              
  Lines        30108    30111       +3     
===========================================
- Hits         13117    13116       -1     
- Misses       16991    16995       +4     

Impacted Files	Coverage Δ
pallets/identity/src/lib.rs	15.91% <0.00%> (-0.05%)	:arrow_down:
pallets/identity/src/claims.rs	90.80% <100.00%> (+0.02%)	:arrow_up:
pallets/identity/src/keys.rs	80.68% <0.00%> (-0.16%)	:arrow_down:
pallets/balances/src/lib.rs	57.10% <0.00%> (-0.14%)	:arrow_down: