Unwrap the actual failure from JsonRPC if it's wrapped #38099

Job	Run time
Attach pull request number	3s
CI Sanity Check	32s
Initial JDK 17 Build	10m 55s
Calculate Test Jobs	10s
Maven Tests - JDK 17	1h 9m 46s
Gradle Tests - JDK 17	25m 46s
Maven Tests - JDK 17 Windows	1h 19m 49s
JVM Tests - JDK 17	3h 34m 45s
Gradle Tests - JDK 17 Windows	54m 8s
Devtools Tests - JDK 17	13m 54s
JVM Tests - JDK 21	3h 30m 0s
Devtools Tests - JDK 21	13m 55s
JVM Tests - JDK 17 Windows	3h 33m 44s
Kubernetes Tests - JDK 17	12m 23s
Devtools Tests - JDK 17 Windows	21m 16s
Quickstarts Compilation - JDK 17	7m 34s
Kubernetes Tests - JDK 21	11m 56s
Kubernetes Tests - JDK 17 Windows	16m 28s
MicroProfile TCKs Tests	42m 22s
Native Tests - Virtual Thread - Main	22m 22s
Native Tests - Virtual Thread - Messaging	9m 23s
Native Tests - Main	7m 40s
Native Tests - Data1	30m 13s
Native Tests - Data2	28m 23s
Native Tests - Data3	23m 29s
Native Tests - Data4	19m 28s
Native Tests - Data5	20m 1s
Native Tests - Data6	26m 18s
Native Tests - Data7	37m 10s
Native Tests - Amazon	13m 47s
Native Tests - Messaging1	30m 46s
Native Tests - Messaging2	15m 3s
Native Tests - Security1	22m 48s
Native Tests - Security2	28m 48s
Native Tests - Security3	12m 49s
Native Tests - Cache	14m 31s
Native Tests - HTTP	40m 33s
Native Tests - Misc1	28m 9s
Native Tests - Misc2	17m 48s
Native Tests - Misc3	28m 4s
Native Tests - Misc4	43m 33s
Native Tests - Spring	18m 18s
Native Tests - gRPC	19m 21s
Native Tests - Windows - RESTEasy Jackson	5m 56s
Native Tests - DevTools Integration Tests	6m 8s
Native Tests - AWT, ImageIO and Java2D	6m 56s
Build report	1m 40s
	1d 2h 38m 51s

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