feat: add support for system indexes [ECS-1791] #5244

Job	Run time
detect-changed-packages	6s
discover-testcases	6s
basic-testcase / staging	34s
apicalls-testcase / staging	39s
calculator-crash-evals / alpha	36s
apicalls-testcase / cloud	36s
basic-testcase / cloud	38s
basic-testcase / alpha	34s
calculator-crash-evals / cloud	30s
csv-processor-evals / staging	33s
apicalls-testcase / alpha	42s
calculator-evals / alpha	3m 26s
calculator-crash-evals / staging	32s
eval-level-expected-output / staging	38s
eval-input-overrides / alpha	31s
eval-input-overrides / cloud	30s
eval-level-expected-output / alpha	44s
calculator-evals / cloud	2m 59s
eval-spans-testcase / staging	1m 25s
calculator-evals / staging	3m 2s
eval-level-expected-output / cloud	35s
csv-processor-evals / cloud	30s
eval-telemetry-testcase / alpha	1m 57s
target-output-key-evals / staging	54s
eval-input-overrides / staging	30s
eval-spans-testcase / cloud	1m 14s
tools-evals / alpha	48s
langchain-cross / cloud	46s
eval-telemetry-testcase / staging	1m 51s
target-output-key-evals / alpha	33s
langchain-cross / staging	46s
langchain-cross / alpha	44s
eval-spans-testcase / alpha	1m 18s
eval-telemetry-testcase / cloud	1m 40s
target-output-key-evals / cloud	32s
tools-evals / staging	45s
csv-processor-evals / alpha	36s
tools-evals / cloud	53s
summarize-results	2s
	36m 15s

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