feat(emails): surface WC emails with chip filtering and preview thumbnails (NPPD-1527)#4732

kmwilkerson wants to merge 8 commits into

nppd-945-unified-emails-newspack-sliceAutomattic/newspack-plugin:nppd-945-unified-emails-newspack-slicefrom

nppd-1527-slice-2-surface-woocommerce-emails-in-the-unified-emails-uiAutomattic/newspack-plugin:nppd-1527-slice-2-surface-woocommerce-emails-in-the-unified-emails-uiCopy head branch name to clipboard