WebClient: improve readability of upload progress #2155

Job	Run time
Test with PgSQL/MySQL/Cockroach	20m 5s
Test with PgSQL/MySQL/Cockroach	20m 5s
Build Linux packages (amd64, ubuntu:18.04, go1.22.8, amd64)	2m 32s
Build Linux packages (amd64, ubuntu:18.04, go1.22.8, amd64)	2m 32s
Build Linux packages (aarch64, ubuntu18.04, go1.22.8, arm64)	15m 31s
Build Linux packages (aarch64, ubuntu18.04, go1.22.8, arm64)	15m 31s
Build Linux packages (ppc64le, ubuntu18.04, go1.22.8, ppc64le)	16m 40s
Build Linux packages (ppc64le, ubuntu18.04, go1.22.8, ppc64le)	16m 40s
Build Linux packages (armv7, ubuntu18.04, go1.22.8, arm7)	17m 27s
Build Linux packages (armv7, ubuntu18.04, go1.22.8, arm7)	17m 27s
golangci-lint	1m 58s
golangci-lint	1m 58s
Test build flags	1m 5s
Test build flags	1m 5s
Test and deploy (1.22, ubuntu-latest, true)	14m 20s
Test and deploy (1.22, ubuntu-latest, true)	14m 20s
Test and deploy (1.22, macos-latest, true)	13m 44s
Test and deploy (1.22, macos-latest, true)	13m 44s
Test and deploy (1.22, windows-latest, false)	26m 53s
Test and deploy (1.22, windows-latest, false)	26m 23s
	4h 20m 0s

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