Tests

Add show method without MIME type for ODESystem #1844

Job	Run time
Tests (1, Downstream) / Tests - Downstream	32m 34s
Tests (1, Extended) / Tests - Extended	19m 34s
Tests (1, Extensions) / Tests - Extensions	39m 38s
Tests (1, FMI) / Tests - FMI	26m 3s
Tests (1, Initialization) / Tests - Initialization	33m 28s
Tests (1, InterfaceI) / Tests - InterfaceI	43m 43s
Tests (1, InterfaceII) / Tests - InterfaceII	55m 44s
Tests (1, RegressionI) / Tests - RegressionI	16m 2s
Tests (1, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	21m 25s
Tests (lts, Downstream) / Tests - Downstream	21m 44s
Tests (lts, Extended) / Tests - Extended	11m 15s
Tests (lts, Extensions) / Tests - Extensions	25m 42s
Tests (lts, FMI) / Tests - FMI	17m 28s
Tests (lts, Initialization) / Tests - Initialization	22m 55s
Tests (lts, InterfaceI) / Tests - InterfaceI	33m 23s
Tests (lts, InterfaceII) / Tests - InterfaceII	52m 38s
Tests (lts, RegressionI) / Tests - RegressionI	7m 41s
Tests (pre, Downstream) / Tests - Downstream	15m 11s
Tests (pre, Extended) / Tests - Extended	14m 55s
Tests (lts, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	12m 15s
Tests (pre, Extensions) / Tests - Extensions	15m 34s
Tests (pre, FMI) / Tests - FMI	15m 38s
Tests (pre, Initialization) / Tests - Initialization	15m 1s
Tests (pre, InterfaceI) / Tests - InterfaceI	14m 54s
Tests (pre, InterfaceII) / Tests - InterfaceII	15m 18s
Tests (pre, RegressionI) / Tests - RegressionI	14m 43s
Tests (pre, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	14m 52s
	10h 29m 18s

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