Align Client SSE support to HTML specification #18068

Job	Run time
Jmh ClientBenchmark	0s
Jmh CachedDateHeaderBenchmark	0s
Build and Test (ubuntu-latest, 2.12.20, graal_graalvm@17)	8m 38s
Build and Test (ubuntu-latest, 2.12.20, graal_graalvm@21)	8m 38s
Jmh CookieDecodeBenchmark	0s
Build and Test (ubuntu-latest, 2.12.20, temurin@17)	8m 53s
Jmh EndpointBenchmark	0s
Build and Test (ubuntu-latest, 2.12.20, temurin@21)	8m 34s
Jmh HttpCollectEval	0s
Jmh HttpCombineEval	0s
Build and Test (ubuntu-latest, 2.13.16, graal_graalvm@17)	11m 18s
Jmh HttpNestedFlatMapEval	0s
Build and Test (ubuntu-latest, 2.13.16, graal_graalvm@21)	11m 1s
Mima Check (ubuntu-latest, 2.13.10, temurin@21)	2m 16s
Build and Test (ubuntu-latest, 2.13.16, temurin@17)	11m 53s
Unsafe Scoverage (ubuntu-latest, 2.13.16, zulu@8)	6m 20s
Build and Test (ubuntu-latest, 2.13.16, temurin@21)	10m 54s
Jmh HttpRouteTextPerf	0s
Jmh MethodLookupBenchmark	0s
Build and Test (ubuntu-latest, 3.3.5, graal_graalvm@17)	8m 0s
Jmh ProbeContentTypeBenchmark	0s
Build and Test (ubuntu-latest, 3.3.5, graal_graalvm@21)	8m 33s
Jmh RoundtripBenchmark	0s
Build and Test (ubuntu-latest, 3.3.5, temurin@17)	8m 41s
Build and Test (ubuntu-latest, 3.3.5, temurin@21)	8m 20s
Jmh RoutesBenchmark	0s
Jmh SchemeDecodeBenchmark	0s
Jmh ServerInboundHandlerBenchmark	0s
Jmh UtilBenchmark	0s
Performance Benchmarks (SimpleEffectBenchmarkServer) (ubuntu-latest, 2.13.16, zulu@8)	8m 7s
Performance Benchmarks (PlainTextBenchmarkServer) (ubuntu-latest, 2.13.16, zulu@8)	8m 1s
Cache Jmh benchmarks	0s
Publish Artifacts	0s
	2h 18m 7s

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