feat(Chat): The `.append_message()` method now automatically streams in generators #6036

Job	Run time
playwright-deploys-precheck (3.10)	1m 26s
playwright-examples (3.12, chromium)	3m 51s
check (3.12, ubuntu-latest)	2m 35s
playwright-examples (3.12, firefox)	5m 42s
check (3.12, windows-latest)	7m 40s
playwright-examples (3.12, webkit)	5m 33s
playwright-shiny (3.12, chromium)	4m 55s
check (3.12, macOS-latest)	3m 0s
playwright-examples (3.11, chromium)	4m 12s
playwright-shiny (3.12, firefox)	5m 7s
check (3.11, ubuntu-latest)	2m 33s
playwright-examples (3.11, firefox)	5m 24s
playwright-shiny (3.12, webkit)	5m 14s
check (3.11, windows-latest)	10m 23s
playwright-examples (3.11, webkit)	5m 14s
playwright-shiny (3.11, chromium)	4m 42s
playwright-examples (3.10, chromium)	4m 32s
playwright-shiny (3.11, firefox)	5m 9s
playwright-examples (3.10, firefox)	5m 37s
playwright-shiny (3.11, webkit)	4m 58s
check (3.11, macOS-latest)	2m 28s
playwright-examples (3.10, webkit)	5m 22s
playwright-shiny (3.10, chromium)	4m 41s
check (3.10, ubuntu-latest)	2m 49s
playwright-examples (3.9, chromium)	3m 57s
playwright-shiny (3.10, firefox)	5m 38s
check (3.10, windows-latest)	6m 25s
playwright-shiny (3.10, webkit)	5m 1s
playwright-examples (3.9, firefox)	5m 7s
check (3.10, macOS-latest)	2m 11s
playwright-shiny (3.9, chromium)	4m 29s
playwright-examples (3.9, webkit)	4m 37s
check (3.9, ubuntu-latest)	2m 26s
playwright-shiny (3.9, firefox)	5m 29s
check (3.9, windows-latest)	6m 15s
check (3.9, macOS-latest)	2m 16s
test-narwhals-integration	3m 35s
Deploy to PyPI	0s
	2h 50m 33s

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