fix(oob): allow legacy did sov prefix

[TimoGlastra]

Fixes #875

[codecov-commenter]

Codecov Report

Merging #889 (b4c291a) into main (ad35b08) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #889   +/-   ##
=======================================
  Coverage   87.58%   87.58%           
=======================================
  Files         468      468           
  Lines       11092    11102   +10     
  Branches     1745     1747    +2     
=======================================
+ Hits         9715     9724    +9     
- Misses       1377     1378    +1     

Impacted Files	Coverage Δ
...re/src/modules/oob/messages/OutOfBandInvitation.ts	96.34% <100.00%> (+0.09%)	⬆️
...s/core/src/modules/connections/services/helpers.ts	96.36% <0.00%> (-1.51%)	⬇️

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