Revert `ServerAASFromJsonDecoder` direct import (#550) #1229

Job	Run time
check-python-versions	12s
sdk-readme-codeblocks	25s
sdk-docs	25s
sdk-test (3.10)	27s
server-repository-docker	53s
repository-check-copyright	12s
sdk-test (3.12)	29s
server-static-analysis	29s
compliance-tool-package	10s
sdk-static-analysis	25s
sdk-package	19s
compliance-tool-static-analysis	23s
	4m 49s

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