build

Use shorter names for test jobs #20174

Job	Run time
testmask	22s
cleanups	2s
validate-python-codegen	10s
validate-generated-is-up-to-date	1m 9s
make test (linux, terraform)	7m 10s
make test (linux, direct)	2m 17s
make test-exp-aitools	0s
make test-exp-apps-mcp	0s
make test-exp-ssh	0s
make test-pipelines	0s
	11m 10s

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