Tests

feat: handle `Initial(x)` initialization_eqs in time-independent systems #1425

Job	Run time
Tests (1, Downstream) / Tests - Downstream	26m 29s
Tests (1, Extended) / Tests - Extended	19m 8s
Tests (1, Extensions) / Tests - Extensions	39m 32s
Tests (1, FMI) / Tests - FMI	27m 7s
Tests (1, Initialization) / Tests - Initialization	29m 38s
Tests (1, InterfaceI) / Tests - InterfaceI	38m 40s
Tests (1, InterfaceII) / Tests - InterfaceII	37m 59s
Tests (1, RegressionI) / Tests - RegressionI	15m 35s
Tests (1, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	20m 34s
Tests (lts, Downstream) / Tests - Downstream	12m 18s
Tests (lts, Extended) / Tests - Extended	9m 58s
Tests (lts, Extensions) / Tests - Extensions	21m 44s
Tests (lts, FMI) / Tests - FMI	13m 55s
Tests (lts, Initialization) / Tests - Initialization	15m 57s
Tests (lts, InterfaceI) / Tests - InterfaceI	24m 36s
Tests (lts, InterfaceII) / Tests - InterfaceII	31m 24s
Tests (lts, RegressionI) / Tests - RegressionI	4m 33s
Tests (lts, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	8m 18s
Tests (pre, Downstream) / Tests - Downstream	24m 59s
Tests (pre, Extended) / Tests - Extended	19m 43s
Tests (pre, Extensions) / Tests - Extensions	38m 30s
Tests (pre, FMI) / Tests - FMI	26m 9s
Tests (pre, Initialization) / Tests - Initialization	29m 3s
Tests (pre, InterfaceI) / Tests - InterfaceI	40m 15s
Tests (pre, InterfaceII) / Tests - InterfaceII	39m 20s
Tests (pre, RegressionI) / Tests - RegressionI	15m 50s
Tests (pre, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	20m 28s
	10h 51m 42s

Provide feedback