test: run Initialization as its own test group

Author: AayushSabharwal

.github/workflows/Tests.yml

@@ -32,6 +32,7 @@ jobs:
         group:
           - InterfaceI
           - InterfaceII
+          - Initialization
           - SymbolicIndexingInterface
           - Extended
           - Extensions

test/runtests.jl

@@ -60,7 +60,7 @@ end
         end
     end
 
-    if GROUP == "All" || GROUP == "InterfaceI" || GROUP == "Initialization"
+    if GROUP == "All" || GROUP == "Initialization"
             @safetestset "Guess Propagation" include("guess_propagation.jl")
             @safetestset "Hierarchical Initialization Equations" include("hierarchical_initialization_eqs.jl")
             @safetestset "InitializationSystem Test" include("initializationsystem.jl")