fix: data-integrity ecdsa2019 signer uses common signer interface

[Moopli]

No description provided.

[codecov]

Codecov Report

Merging #3627 (4295644) into main (6911901) will increase coverage by 0.00%.
Report is 2 commits behind head on main.
The diff coverage is 92.53%.

@@           Coverage Diff           @@
##             main    #3627   +/-   ##
=======================================
  Coverage   86.93%   86.93%           
=======================================
  Files         367      367           
  Lines       50024    50043   +19     
=======================================
+ Hits        43487    43505   +18     
- Misses       4951     4953    +2     
+ Partials     1586     1585    -1     

Files Changed	Coverage Δ
component/models/ld/testutil/document_loader.go	82.14% <ø> (ø)
.../models/dataintegrity/suite/ecdsa2019/ecdsa2019.go	93.51% <91.52%> (+1.55%)	⬆️
component/models/dataintegrity/verifier.go	89.88% <100.00%> (-2.71%)	⬇️