Do not fail UPX if compression level is not given #38266

Job	Run time
Attach pull request number	3s
CI Sanity Check	32s
Initial JDK 17 Build	16m 23s
Calculate Test Jobs	9s
Gradle Tests - JDK 17	25m 44s
Maven Tests - JDK 17	56m 44s
Gradle Tests - JDK 17 Windows	52m 18s
Devtools Tests - JDK 17	14m 14s
Maven Tests - JDK 17 Windows	1h 15m 48s
JVM Tests - JDK 17	3h 49m 25s
Devtools Tests - JDK 21	14m 25s
JVM Tests - JDK 21	3h 52m 46s
Devtools Tests - JDK 17 Windows	22m 27s
Kubernetes Tests - JDK 17	12m 53s
JVM Tests - JDK 17 Windows	4h 2m 12s
Quickstarts Compilation - JDK 17	7m 0s
Kubernetes Tests - JDK 21	12m 0s
Kubernetes Tests - JDK 17 Windows	17m 55s
MicroProfile TCKs Tests	46m 2s
Native Tests - Virtual Thread - Main	23m 7s
Native Tests - Virtual Thread - Messaging	9m 42s
Native Tests - Main	7m 56s
Native Tests - Data1	30m 28s
Native Tests - Data2	30m 2s
Native Tests - Data3	24m 2s
Native Tests - Data4	20m 22s
Native Tests - Data5	21m 1s
Native Tests - Data6	27m 29s
Native Tests - Data7	36m 57s
Native Tests - Amazon	16m 47s
Native Tests - Messaging1	31m 35s
Native Tests - Messaging2	14m 9s
Native Tests - Security1	23m 44s
Native Tests - Security2	29m 31s
Native Tests - Security3	13m 52s
Native Tests - Cache	15m 39s
Native Tests - HTTP	41m 34s
Native Tests - Misc1	26m 44s
Native Tests - Misc2	17m 49s
Native Tests - Misc3	28m 20s
Native Tests - Misc4	44m 9s
Native Tests - Spring	20m 24s
Native Tests - gRPC	19m 53s
Native Tests - Windows - RESTEasy Jackson	5m 40s
Native Tests - DevTools Integration Tests	4m 47s
Native Tests - AWT, ImageIO and Java2D	8m 9s
Build report	36s
	1d 3h 53m 28s

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