Bugfix: result extraction for incompressible media now based on real density #1441

Job	Run time
tutorial_tests (3.8, ubuntu-latest)	35s
tutorial_tests (3.8, windows-latest)	45s
docs_check (3.10)	56s
linting (3.10, ubuntu-latest)	1m 23s
tutorial_tests (3.9, ubuntu-latest)	51s
build (3.8, ubuntu-latest)	1m 6s
linting (3.10, windows-latest)	4m 52s
tutorial_tests (3.9, windows-latest)	45s
build (3.8, windows-latest)	2m 10s
tutorial_tests (3.10, ubuntu-latest)	53s
relying (3.8, ubuntu-latest)	15s
build (3.9, ubuntu-latest)	1m 43s
tutorial_tests (3.10, windows-latest)	46s
relying (3.8, windows-latest)	30s
build (3.9, windows-latest)	2m 40s
tutorial_tests (3.11, ubuntu-latest)	51s
relying (3.9, ubuntu-latest)	22s
build (3.10, ubuntu-latest)	1m 4s
tutorial_tests (3.11, windows-latest)	45s
relying (3.9, windows-latest)	28s
build (3.10, windows-latest)	2m 17s
relying (3.10, ubuntu-latest)	40s
build (3.11, ubuntu-latest)	1m 4s
relying (3.10, windows-latest)	32s
build (3.11, windows-latest)	2m 19s
relying (3.11, ubuntu-latest)	35s
relying (3.11, windows-latest)	31s
	31m 38s

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