add the target info to the ts manager key

[SimFG]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.33333% with 7 lines in your changes missing coverage. Please review.

Project coverage is 59.68%. Comparing base (3ea1ebf) to head (9b94963).

Files with missing lines	Patch %	Lines
core/reader/ts_manager.go	84.84%	5 Missing ⚠️
core/reader/replicate_channel_manager.go	92.30%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #148      +/-   ##
==========================================
+ Coverage   59.59%   59.68%   +0.08%     
==========================================
  Files          63       63              
  Lines        8120     8145      +25     
==========================================
+ Hits         4839     4861      +22     
- Misses       2963     2966       +3     
  Partials      318      318              

Files with missing lines	Coverage Δ
server/cdc_impl.go	60.67% <100.00%> (+0.03%)	⬆️
core/reader/replicate_channel_manager.go	54.95% <92.30%> (+0.47%)	⬆️
core/reader/ts_manager.go	76.88% <84.84%> (-0.84%)	⬇️