[INLONG-1427]Go SDK return maxOffset and updateTime in ConsumerOffset

[TszKitLo40]

Signed-off-by: Zijie Lu wslzj40@gmail.com

Title Name: [INLONG-XYZ][component] Title of the pull request

where XYZ should be replaced by the actual issue number.

Fixes #1427

Motivation

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Modifications

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Verifying this change

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This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Documentation

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[codecov-commenter]

Codecov Report

Merging #1428 (f78e6ac) into INLONG-25 (0480e0b) will increase coverage by 0.02%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             INLONG-25   #1428      +/-   ##
==============================================
+ Coverage         7.48%   7.51%   +0.02%     
  Complexity         479     479              
==============================================
  Files              267     267              
  Lines            29500   29500              
  Branches          4843    4843              
==============================================
+ Hits              2209    2216       +7     
+ Misses           26816   26810       -6     
+ Partials           475     474       -1     

Impacted Files	Coverage Δ
.../java/org/apache/flume/sink/tubemq/TubemqSink.java	55.42% <0.00%> (+4.00%)	⬆️

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[gosonzhang]

+1