perf(transformer): introduce `NonEmptyStack` #18380

Job	Run time
Benchmark (lexer)	1m 56s
Build Linter Benchmark	3m 14s
Benchmark (parser)	2m 5s
Benchmark (transformer)	2m 28s
Benchmark (isolated_declarations)	2m 21s
Benchmark (semantic)	2m 0s
Benchmark (minifier)	2m 54s
Benchmark (codegen)	2m 4s
Benchmark (sourcemap)	1m 50s
Benchmark linter (0)	2m 48s
Benchmark linter (1)	3m 15s
Upload benchmarks	27s
	27m 22s

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