I also checked and all the block templates with pagination options have ALLOW_INFINITE_SCROLL=1 in, which can be changed to ALLOW_INFINITE_SCROLL=0 if you want to revert to regular pagination for those blocks.
1) ALLOW_INFINITE_SCROLL={$EQ,{DISPLAY_TYPE},FIELDMAPS,GRID} was in CATALOGUE_CATEGORY_EMBED.tpl, which I expect is the template for the main_cc_embed block and it took some finding. Changed to 0 which seems to have done the trick.
2) ALLOW_INFINITE_SCROLL=0 in BLOCK_MAIN_MULTI_CONTENT.tpl, pagination is working but the block title is repeated when a new page is clicked. Refreshing the page removes the extra title.
Pagination for block options should be labelled consistently, and explaining infinite scrolling replaces pagination if configured.
2) ALLOW_INFINITE_SCROLL=0 in BLOCK_MAIN_MULTI_CONTENT.tpl, pagination is working but the block title is repeated when a new page is clicked. Refreshing the page removes the extra title.