fix: analyzer memory leak because function runner not close

[aoiasd]

relate: #41213

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@aoiasd cpp-unit-test check failed, comment rerun cpp-unit-test can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 6 lines in your changes missing coverage. Please review.

Project coverage is 80.47%. Comparing base (020d366) to head (389e986).
Report is 35 commits behind head on master.

Files with missing lines	Patch %	Lines
...rnal/util/function/multi_analyzer_bm25_function.go	0.00%	4 Missing ⚠️
internal/datanode/importv2/util.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #41839      +/-   ##
==========================================
- Coverage   80.48%   80.47%   -0.01%     
==========================================
  Files        1538     1538              
  Lines      218517   218535      +18     
==========================================
+ Hits       175871   175874       +3     
- Misses      36303    36315      +12     
- Partials     6343     6346       +3     

Components	Coverage Δ
Client	79.36% <ø> (ø)
Core	72.99% <ø> (ø)
Go	81.94% <66.66%> (-0.01%)	⬇️

Files with missing lines	Coverage Δ
.../flushcommon/pipeline/flow_graph_embedding_node.go	85.57% <100.00%> (+0.57%)	⬆️
internal/querynodev2/pipeline/embedding_node.go	90.27% <100.00%> (+0.27%)	⬆️
internal/util/function/bm25_function.go	76.87% <100.00%> (+0.27%)	⬆️
internal/util/function/function.go	100.00% <ø> (ø)
internal/util/pipeline/node.go	100.00% <100.00%> (ø)
internal/util/pipeline/pipeline.go	88.37% <100.00%> (+0.27%)	⬆️
internal/datanode/importv2/util.go	72.20% <0.00%> (-0.40%)	⬇️
...rnal/util/function/multi_analyzer_bm25_function.go	63.96% <0.00%> (-1.18%)	⬇️

... and 34 files with indirect coverage changes

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[mergify]

@aoiasd E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@aoiasd E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@aoiasd cpp-unit-test check failed, comment rerun cpp-unit-test can trigger the job again.

[mergify]

@aoiasd E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[aoiasd]

/run-cpu-e2e

[congqixia]

/lgtm

[sre-ci-robot]

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