Make coverage generation include results from cram tests #14624

Job	Run time
regression (ubuntu-22.04, ocaml-variants.4.14.2+options,ocaml-option-flambda)	8m 24s
regression (macos-13, ocaml-variants.4.14.2+options,ocaml-option-flambda)	20m 0s
extraction	0s
	28m 24s

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