mavsdk_server: fix autopilot discovery (#2388) #4160

Job	Run time
ubuntu-20.04 (mavsdk, hunter)	4m 18s
ubuntu-20.04 (mavsdk_server, superbuild)	46m 12s
alpine 3.19.0 (musl)	38m 2s
coverage (ubuntu-20.04)	6m 24s
Ubuntu/Debian packaging (Ubuntu 20.04)	6m 31s
ubuntu-22.04 (mavsdk_server, superbuild)	38m 28s
ubuntu-20.04 (package, non-mavsdk_server)	7m 17s
android-arm	21m 19s
ubuntu-22.04 (package, non-mavsdk_server)	6m 14s
linux-armv6	6m 30s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	5m 55s
android-arm64	21m 33s
linux-armv7	7m 0s
android-x86	21m 58s
ubuntu-22.04 (style and proto check)	31m 11s
linux-arm64	7m 1s
android-x86_64	21m 38s
linux-arm64-lts	6m 19s
linux-armv6-musl	37m 13s
ios	57m 43s
linux-armv7l-musl	37m 20s
macOS x64	35m 31s
ios_simulator_x64	35m 29s
linux-arm64-musl	40m 25s
macOS arm64	19m 33s
ios_simulator_arm64	1h 14m 18s
Windows	1h 19m 34s
macOS framework x64	39m 12s
macOS framework arm64	19m 59s
iOS XCFramework	2m 9s
	13h 2m 16s

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