Error hint on Num in boolean context

[baggepinnen]

Use of a symbolic expression in a boolean context is a rather common user mistake, this PR adds a hint with possible fixes

[github-actions]

[JuliaFormatter] _{reported by reviewdog 🐶}

Suggested change

	println(io, "\nA symbolic expression appeared in a Boolean context. This error arises in situations where Julia expects a Bool, like ")
	printstyled(io, "if boolean_condition", color=:blue)
	printstyled(io, "\t\t use ifelse(boolean_condition, then branch, else branch)\n", color=:green)
	printstyled(io, "x && y", color=:blue)
	printstyled(io, "\t\t\t\t use x & y\n", color=:green)
	printstyled(io, "booelan_condition ? a : b", color=:blue)
	printstyled(io, "\t use ifelse(boolean_condition, a, b)\n", color=:green)
	print(io, "but a symbolic expression appeared instead of a Bool. For help regarding control flow with symbolic variables, see https://docs.sciml.ai/ModelingToolkit/dev/basics/FAQ/#How-do-I-handle-if-statements-in-my-symbolic-forms?")
	println(io,
	"\nA symbolic expression appeared in a Boolean context. This error arises in situations where Julia expects a Bool, like ")
	printstyled(io, "if boolean_condition", color = :blue)
	printstyled(
	io, "\t\t use ifelse(boolean_condition, then branch, else branch)\n",
	color = :green)
	printstyled(io, "x && y", color = :blue)
	printstyled(io, "\t\t\t\t use x & y\n", color = :green)
	printstyled(io, "booelan_condition ? a : b", color = :blue)
	printstyled(io, "\t use ifelse(boolean_condition, a, b)\n", color = :green)
	print(io,
	"but a symbolic expression appeared instead of a Bool. For help regarding control flow with symbolic variables, see https://docs.sciml.ai/ModelingToolkit/dev/basics/FAQ/#How-do-I-handle-if-statements-in-my-symbolic-forms?")

[ChrisRackauckas]

This is the wrong repository. It's effectively piracy here. It should be in Symbolics.jl