## Summary
Avoid direct captures of structured bindings in
`ChunkedSegmentSealedImpl.cpp`, which is compiled with OpenMP enabled.
- Use an init-capture for the field ID in `LoadBatchTextIndexes`.
- Use an init-capture for the field ID in `FinalizeLoadDiffForReopen`
when dropping JSON indexes.
- Keep the inner text-index commit lambda as a normal value capture
because it captures the ordinary init-capture from the outer lambda, not
a structured binding.
issue: #51231
## Test Plan
- [x] `make`
- [x] `ninja -C cmake_build
src/segcore/CMakeFiles/milvus_segcore.dir/ChunkedSegmentSealedImpl.cpp.o`
- [x] `git diff --check`
Signed-off-by: sijie-ni-0214 <sijie.ni@zilliz.com>