use value_from for initializer_list construction

[grisumbras]

Fix #1126.

[cppalliance-bot]

An automated preview of the documentation is available at https://1146.json.prtest2.cppalliance.org/libs/json/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-02-24 19:50:44 UTC

[cppalliance-bot]

GCOVR code coverage report https://1146.json.prtest2.cppalliance.org/gcovr/index.html
LCOV code coverage report https://1146.json.prtest2.cppalliance.org/genhtml/index.html
Coverage Diff Report https://1146.json.prtest2.cppalliance.org/diff-report/index.html

Build time: 2026-02-24 20:06:20 UTC

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1146/pullrequest.html

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.67%. Comparing base (4df9a86) to head (133b48d).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1146      +/-   ##
===========================================
- Coverage    93.67%   93.67%   -0.01%     
===========================================
  Files           91       91              
  Lines         9154     9153       -1     
===========================================
- Hits          8575     8574       -1     
  Misses         579      579              

Files with missing lines	Coverage Δ
include/boost/json/detail/parse_into.hpp	99.33% <ø> (ø)
include/boost/json/detail/value_from.hpp	100.00% <ø> (ø)
include/boost/json/impl/conversion.hpp	100.00% <ø> (ø)
include/boost/json/impl/value_ref.hpp	100.00% <100.00%> (ø)

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