Simplify curl progress tracking (#2486) #1875

Job	Run time
macos12	16m 17s
MemoryTest (glibc_debug)	17m 13s
Linux (ubuntu:24.04)	12m 47s
MemoryTest (sanitize_address)	18m 9s
Linux (ubuntu:22.04)	12m 6s
MemoryTest (sanitize_others)	10m 29s
Linux (ubuntu:20.04)	8m 8s
MemoryTest (sanitize_thread)	3m 2s
Linux (debian:bookworm)	12m 17s
MemoryTest (valgrind)	23m 39s
Linux (debian:bullseye)	9m 56s
Linux (rockylinux:9)	19m 8s
Linux (rockylinux:8)	12m 53s
Linux (fedora:40)	12m 45s
Linux (fedora:39)	14m 29s
Linux (opensuse/leap:15)	12m 28s
Linux (alpine:3.19)	18m 47s
	3h 54m 33s

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