BaseInteroperabilityInternalMethod.getChainValidators

[has5aan]

What was the problem?

This PR resolves #8767

How was it solved?

Implemented BaseInteroperabilityInternalMethod.getChainValidators.

How was it tested?

Implemented unit tests.

[codecov]

Codecov Report

Merging #8780 (84bfc8e) into release/6.0.0 (8d43598) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 84bfc8e differs from pull request most recent head 8d375c3. Consider uploading reports for the commit 8d375c3 to get more accurate results

Additional details and impacted files

@@                Coverage Diff                @@
##           release/6.0.0    #8780      +/-   ##
=================================================
- Coverage          83.32%   83.31%   -0.01%     
=================================================
  Files                594      594              
  Lines              22321    22314       -7     
  Branches            3291     3290       -1     
=================================================
- Hits               18599    18592       -7     
  Misses              3722     3722              

Files Changed	Coverage Δ
...rability/base_interoperability_internal_methods.ts	91.46% <100.00%> (+0.28%)	⬆️

... and 4 files with indirect coverage changes