feat: enable CSE in build_function_wrapper

feat: enable CSE in build_function_wrapper

fix: test and handle scalar connections in substitute_component

test: fix rootfinding tests

fix: fix does_namespacing fallback to iscomplete

test: fix usage of completed system as subsystem

build: bump Symbolics compat

Update src/systems/optimization/optimizationsystem.jl

Update src/systems/optimization/constraints_system.jl

Update src/systems/nonlinear/nonlinearsystem.jl

Update src/systems/discrete_system/implicit_discrete_system.jl

Update src/systems/discrete_system/discrete_system.jl

Update src/systems/diffeqs/sdesystem.jl

build: bump Symbolics compat

feat: add substitute_component

test: fix usage of completed system as subsystem

test: test new namespacing functionality

test: import DataInterpolations in test

test: test called parameters are still differentiated

fix: handle derivatives of time-dependent parameters

fix: fix callable parameters in remake_buffer

fix: fix typo

fix: fix jump system hack

fix: fix typo

fix: handle case when prob.u0 === nothing in linearization_function

test: make model parsing tests more generic