v8.42.0

ModelingToolkit v8.42.0

Diff since v8.41.0

Closed issues:

• Unbalanced system error when using "compose" (#2027)
• Error when setting up matrix ODE (#2030)

Merged pull requests:

• [skip ci] docstring spelling (#2035) (@ArnoStrouwen)
• Fixes nested opt. systems for more than two levels (#2036) (@ValentinKaisermayer)
• Fix the if statements to add symbolic constraints in modelingtoolkitize of OptimizationProblem (#2040) (@Vaibhavdixit02)
• fix math rendering in docstring (#2041) (@baggepinnen)