refactor(semantic): re-order `SymbolTable` fields #12335

Job	Run time
Build Linter Benchmark	4m 25s
Benchmark (lexer)	1m 27s
Benchmark (parser)	1m 25s
Benchmark (transformer)	1m 56s
Benchmark (isolated_declarations)	1m 33s
Benchmark (semantic)	1m 37s
Benchmark (minifier)	2m 0s
Benchmark (codegen)	1m 32s
Benchmark (sourcemap)	1m 23s
Benchmark linter (0)	1m 45s
Benchmark linter (1)	1m 13s
Upload benchmarks	14s
	20m 30s

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