* add upstream limits to mesh gateway cluster generation * changelog * go mod tidy * readd changelog data * undo reversion from rebase * run codegen * Update .changelog/20945.txt Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> * address notes * gofmt * clean up * gofmt * Update agent/proxycfg/mesh_gateway.go * gofmt * nil check --------- Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>