Add GenAI semconv attributes to native OTel spans #2650

Job	Run time
checks / pre-commit	22s
checks / readme-snippets	11s
checks / test (3.10, lowest-direct, ubuntu-latest)	54s
checks / test (3.10, locked, ubuntu-latest)	50s
checks / test (3.11, lowest-direct, windows-latest)	1m 21s
checks / test (3.11, locked, windows-latest)	1m 19s
checks / test (3.11, lowest-direct, ubuntu-latest)	57s
checks / test (3.10, lowest-direct, windows-latest)	1m 20s
checks / test (3.10, locked, windows-latest)	1m 23s
checks / test (3.14, lowest-direct, ubuntu-latest)	49s
checks / test (3.13, lowest-direct, windows-latest)	1m 9s
checks / test (3.11, locked, ubuntu-latest)	50s
checks / test (3.12, lowest-direct, ubuntu-latest)	58s
checks / test (3.13, lowest-direct, ubuntu-latest)	53s
checks / test (3.13, locked, windows-latest)	59s
checks / test (3.12, locked, ubuntu-latest)	53s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.14, lowest-direct, windows-latest)	1m 21s
checks / test (3.14, locked, windows-latest)	2m 27s
checks / test (3.12, locked, windows-latest)	1m 26s
checks / test (3.14, locked, ubuntu-latest)	1m 48s
checks / test (3.12, lowest-direct, windows-latest)	1m 20s
all-green	2s
	24m 17s

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