refactor(minifier): clean up `try_optimize_block` #25201

Job	Run time
Benchmark (lexer)	1m 32s
Benchmark (parser)	1m 46s
Build Linter Benchmark	2m 46s
Benchmark (transformer)	2m 45s
Benchmark (isolated_declarations)	1m 51s
Benchmark (semantic)	1m 50s
Benchmark (minifier)	2m 33s
Benchmark (codegen)	2m 22s
Benchmark linter (0)	2m 57s
Benchmark linter (1)	1m 36s
Upload benchmarks	31s
	22m 29s

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