Transactional boundary issue for resend

[namtruong]

The transactional boundary was incorrectly set (via transactional annotation) at the TransactionManager method level (there was already one at the DAO layer).

In resend method, when recovery needs to be done for large datasets, due to db results pagination,
the resultSet was listed multiple times within this transactional boundary, which results in an increase in memory used that can potentially cause OutOfMemory exception

[codecov-io]

Codecov Report

Merging #898 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #898   +/-   ##
=========================================
  Coverage     99.37%   99.37%           
  Complexity     2092     2092           
=========================================
  Files           317      317           
  Lines          5774     5774           
  Branches        309      309           
=========================================
  Hits           5738     5738           
  Misses            5        5           
  Partials         31       31

Impacted Files	Coverage Δ	Complexity Δ
...um/tessera/transaction/TransactionManagerImpl.java	100% <ø> (ø)	37 <0> (ø)	⬇️

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