Emit `dead` goto-instructions on MIR StatementDead #6264

Job	Run time
perf	26m 45s
benchcomp-tests	4m 3s
regression (macos-13)	35m 33s
write-json-symtab-regression	13m 32s
regression (ubuntu-20.04)	22m 48s
regression (ubuntu-22.04)	26m 2s
bookrunner	14m 3s
	2h 22m 46s

Provide feedback