Fix ScalaJS regex and regression tests #16142

Job	Run time
Jmh CachedDateHeaderBenchmark	0s
Build and Test (ubuntu-latest, 2.12.19, graal_graalvm@17)	6m 59s
Build and Test (ubuntu-latest, 2.12.19, graal_graalvm@21)	6m 48s
Unsafe Scoverage (ubuntu-latest, 2.13.14, temurin@8)	4m 52s
Build and Test (ubuntu-latest, 2.12.19, temurin@17)	7m 27s
Build and Test (ubuntu-latest, 2.12.19, temurin@21)	6m 38s
Build and Test (ubuntu-latest, 2.13.14, graal_graalvm@17)	9m 46s
Release Drafter (ubuntu-latest, 2.13.10, temurin@8)	7s
Jmh CookieDecodeBenchmark	0s
Build and Test (ubuntu-latest, 2.13.14, graal_graalvm@21)	9m 28s
Build and Test (ubuntu-latest, 2.13.14, temurin@17)	9m 55s
Jmh EndpointBenchmark	0s
Jmh HttpCollectEval	0s
Build and Test (ubuntu-latest, 2.13.14, temurin@21)	9m 18s
Build and Test (ubuntu-latest, 3.3.3, graal_graalvm@17)	6m 29s
Jmh HttpCombineEval	0s
Build and Test (ubuntu-latest, 3.3.3, graal_graalvm@21)	6m 17s
Jmh HttpNestedFlatMapEval	0s
Build and Test (ubuntu-latest, 3.3.3, temurin@17)	7m 14s
Build and Test (ubuntu-latest, 3.3.3, temurin@21)	6m 6s
Jmh HttpRouteTextPerf	0s
Jmh ProbeContentTypeBenchmark	0s
Jmh SchemeDecodeBenchmark	0s
Jmh UtilBenchmark	0s
Jmh ServerInboundHandlerBenchmark	0s
Performance Benchmarks (SimpleEffectBenchmarkServer) (ubuntu-latest, 2.13.14, temurin@8)	7m 52s
Performance Benchmarks (PlainTextBenchmarkServer) (ubuntu-latest, 2.13.14, temurin@8)	7m 43s
Cache Jmh benchmarks	0s
Publish Artifacts	0s
	1h 52m 59s

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