refactor(semantic): remove Ambient symbol flag #26448

Job	Run time
Benchmark (lexer)	1m 16s
Build Linter Benchmark	2m 35s
Benchmark (parser)	1m 31s
Benchmark (transformer)	2m 13s
Benchmark (isolated_declarations)	2m 1s
Benchmark (semantic)	1m 54s
Benchmark (minifier)	2m 7s
Benchmark (codegen)	2m 0s
Benchmark linter (0)	3m 23s
Benchmark linter (1)	2m 2s
Upload benchmarks	27s
	21m 29s

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