refactor(semantic): remove `ScopeFlags::Modifiers` #24472

Job	Run time
Benchmark (lexer)	1m 15s
Benchmark (parser)	1m 27s
Build Linter Benchmark	2m 39s
Benchmark (transformer)	2m 10s
Benchmark (isolated_declarations)	2m 5s
Benchmark (semantic)	1m 35s
Benchmark (minifier)	2m 28s
Benchmark (codegen)	1m 29s
Benchmark linter (0)	3m 12s
Benchmark linter (1)	1m 42s
Upload benchmarks	17s
	20m 19s

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