[Java] ComplexCopier gives incorrect result for list vector if target vector is non-empty

[asfimport]

Reporter: Projjal Chanda / @projjal
Assignee: Projjal Chanda / @projjal

PRs and other links:

• GitHub Pull Request #8742

_{Note: This issue was originally created as ARROW-10690. Please see the migration documentation for further details.}