HPCC-30964 Add overflow support to metrics breadcrumbs #9691

Job	Run time
check-skip	8s
Build platform and regress setup	30m 36s
unittests	3m 59s
regression-jobs (hthor, [a-d]*.ecl)	6m 58s
eclwatch-ui-tests	2m 41s
regression-jobs (hthor, [e-h]*.ecl)	4m 21s
regression-jobs (hthor, [i-l]*.ecl)	6m 13s
regression-jobs (hthor, [m-q]*.ecl)	4m 9s
regression-jobs (hthor, [r-u]*.ecl, teststdlibrary.ecl)	11m 1s
regression-jobs (hthor, [v-z]*.ecl)	5m 16s
regression-jobs (thor, [a-d]*.ecl)	6m 10s
regression-jobs (thor, [e-h]*.ecl)	4m 25s
regression-jobs (thor, [i-l]*.ecl)	8m 1s
regression-jobs (thor, [m-q]*.ecl)	4m 21s
regression-jobs (thor, [r-u]*.ecl, teststdlibrary.ecl)	9m 45s
regression-jobs (thor, [v-z]*.ecl)	4m 47s
regression-jobs (roxie, [a-d]*.ecl)	7m 27s
regression-jobs (roxie, [e-h]*.ecl)	3m 58s
regression-jobs (roxie, [i-l]*.ecl)	6m 44s
regression-jobs (roxie, [m-q]*.ecl)	4m 49s
regression-jobs (roxie, [r-u]*.ecl, teststdlibrary.ecl)	12m 1s
regression-jobs (roxie, [v-z]*.ecl)	4m 33s
regression-jobs (hthor, teststdlibrary.ecl)	3m 52s
regression-jobs (thor, teststdlibrary.ecl)	5m 7s
regression-jobs (roxie, teststdlibrary.ecl)	3m 58s
	2h 45m 20s

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