Fix error when waiting for remote COPY to finish

[akuzm]

Pass proper flags to WaitLatchOrSocket

Fixes https://github.com/timescale/timescaledb/issues/4728

[codecov[bot]]

Codecov Report

Merging #4738 (a70b8c4) into main (db66a19) will decrease coverage by 0.00%. The diff coverage is 100.00%.

:exclamation: Current head a70b8c4 differs from pull request most recent head 0fff954. Consider uploading reports for the commit 0fff954 to get more accurate results

@@            Coverage Diff             @@
##             main    #4738      +/-   ##
==========================================
- Coverage   90.89%   90.89%   -0.01%     
==========================================
  Files         224      224              
  Lines       42405    42405              
==========================================
- Hits        38543    38542       -1     
- Misses       3862     3863       +1     

Impacted Files	Coverage Δ
tsl/src/nodes/gapfill/gapfill_plan.c	96.87% <100.00%> (ø)
tsl/src/remote/connection.c	88.49% <100.00%> (ø)
tsl/src/nodes/data_node_dispatch.c	96.49% <0.00%> (-0.24%)	:arrow_down:

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