[IlyaKhalafi]

Description

This PR fixes bulk_update consuming object and field iterators before all batches run. With this, iterator inputs update every batch, with object membership and field names captured when the query is created.

Fixes #2317

Motivation and Context

Both inputs accept iterables, but validation exhausts object iterators and batching exhausts field iterators.

How Has This Been Tested?

The new cases fail five times on the original code, with four passing controls. The full SQLite suite passes with 1983 passed, 149 skipped and two expected failures. make check passes.

Checklist

• I have read the contribution guide
• My code follows the project style
• I have added regression tests
• I have added a changelog entry

[codspeed]

Merging this PR will not alter performance

1 warning

⚠️ 21 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

See affected benchmarks

✅ 24 untouched benchmarks

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_{Comparing IlyaKhalafi:fix/bulk-update-iterables (2a172d8) with develop (cec625e)}