feat: add support for system indexes [ECS-1791] #5259

Job	Run time
detect-changed-packages	6s
discover-testcases	4s
basic-testcase / alpha	31s
calculator-crash-evals / staging	36s
calculator-evals / alpha	3m 51s
basic-testcase / staging	1m 9s
calculator-evals / staging	3m 28s
csv-processor-evals / alpha	34s
eval-input-overrides / alpha	32s
calculator-crash-evals / alpha	37s
basic-testcase / cloud	35s
eval-level-expected-output / cloud	35s
calculator-evals / cloud	3m 0s
eval-input-overrides / staging	42s
eval-telemetry-testcase / alpha	2m 10s
eval-input-overrides / cloud	33s
apicalls-testcase / staging	1m 8s
eval-spans-testcase / alpha	1m 23s
calculator-crash-evals / cloud	50s
csv-processor-evals / cloud	39s
langchain-cross / cloud	41s
eval-spans-testcase / cloud	1m 15s
langchain-cross / staging	47s
tools-evals / alpha	44s
csv-processor-evals / staging	34s
langchain-cross / alpha	59s
eval-telemetry-testcase / cloud	1m 50s
eval-spans-testcase / staging	1m 22s
target-output-key-evals / alpha	32s
target-output-key-evals / cloud	31s
tools-evals / cloud	50s
eval-level-expected-output / alpha	59s
tools-evals / staging	1m 1s
eval-telemetry-testcase / staging	1m 53s
apicalls-testcase / alpha	44s
target-output-key-evals / staging	32s
apicalls-testcase / cloud	41s
eval-level-expected-output / staging	43s
summarize-results	3s
	39m 44s

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