Overlay: add database upload size limit #4701

Job	Run time
Diagnostic export (ubuntu-latest, nightly-latest)	1m 8s
Diagnostic export (macos-latest, linked)	1m 4s
Diagnostic export (windows-latest, nightly-latest)	3m 9s
Diagnostic export (ubuntu-latest, linked)	1m 7s
Diagnostic export (windows-latest, linked)	2m 33s
Diagnostic export (macos-latest, nightly-latest)	1m 4s
	10m 5s

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