Tests

Refactor Unitful.jl usage to use package extensions #2525

Job	Run time
Tests (lts, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	12m 8s
Tests (lts, Extensions) / Tests - Extensions	28m 43s
Tests (pre, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	25m 25s
Tests (pre, Extensions) / Tests - Extensions	32m 49s
Tests (pre, Initialization) / Tests - Initialization	40m 7s
Tests (pre, Extended) / Tests - Extended	20m 57s
Tests (pre, FMI) / Tests - FMI	34m 43s
Tests (pre, Downstream) / Tests - Downstream	22m 14s
Tests (1, SymbolicIndexingInterface) / Tests - SymbolicIndexingInterface	22m 41s
Tests (1, InterfaceII) / Tests - InterfaceII	46m 24s
Tests (lts, Initialization) / Tests - Initialization	21m 40s
Tests (1, Extended) / Tests - Extended	19m 59s
Tests (1, FMI) / Tests - FMI	29m 32s
Tests (1, RegressionI) / Tests - RegressionI	15m 58s
Tests (lts, InterfaceII) / Tests - InterfaceII	32m 14s
Tests (lts, FMI) / Tests - FMI	17m 45s
Tests (1, Initialization) / Tests - Initialization	36m 27s
Tests (lts, Extended) / Tests - Extended	10m 50s
Tests (1, Extensions) / Tests - Extensions	47m 11s
Tests (pre, RegressionI) / Tests - RegressionI	17m 32s
Tests (pre, InterfaceI) / Tests - InterfaceI	50m 58s
Tests (pre, InterfaceII) / Tests - InterfaceII	50m 39s
Tests (lts, Downstream) / Tests - Downstream	11m 52s
Tests (lts, RegressionI) / Tests - RegressionI	7m 40s
Tests (1, Downstream) / Tests - Downstream	21m 59s
Tests (lts, InterfaceI) / Tests - InterfaceI	29m 24s
Tests (1, InterfaceI) / Tests - InterfaceI	44m 5s
	12h 31m 56s

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