Merge 'iostream/http: Fix output_stream::write(temporary_buffer) over… #683

Job	Run time
Test with DPDK enabled / test	19m 47s
Test (clang++, C++20, debug) / test	13m 24s
Test (clang++, C++20, dev) / test	12m 23s
Test with C++20 modules enabled / test	11m 22s
Test (clang++, C++20, release) / test	12m 31s
Test (clang++, C++23, debug) / test	13m 57s
Test (clang++, C++23, dev) / test	12m 6s
Test (clang++, C++23, release) / test	12m 37s
Test (g++, C++20, debug) / test	15m 28s
Test (g++, C++20, dev) / test	9m 55s
Test (g++, C++20, release) / test	13m 13s
Test (g++, C++23, debug) / test	16m 19s
Test (g++, C++23, dev) / test	9m 36s
Test (g++, C++23, release) / test	13m 36s
	3h 6m 14s

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