fix(ts/fast-strip): More robust generic arrow handling #26609

Job	Run time
List crates to benchmark	28s
Build benchmark for swc	25m 24s
Build benchmark for swc_allocator	1m 39s
Build benchmark for swc_common	1m 10s
Build benchmark for swc_css_parser	3m 49s
Build benchmark for swc_ecma_codegen	4m 8s
Build benchmark for swc_ecma_lints	2m 56s
Build benchmark for swc_ecma_minifier	4m 33s
Build benchmark for swc_ecma_parser	4m 29s
Build benchmark for swc_ecma_preset_env	5m 2s
Build benchmark for swc_ecma_transforms_base	4m 22s
Build benchmark for swc_ecma_transforms_typescript	4m 36s
Build benchmark for swc_estree_compat	4m 35s
Build benchmark for swc_fast_ts_strip	3m 12s
Build benchmark for swc_html_minifier	5m 22s
Build benchmark for swc_html_parser	3m 38s
Run benchmarks	30m 37s
	1h 50m 0s

Provide feedback