[SR-9461] Resolve duplicate output in swift bulid

[hartbit]

Previously, we would re-update the progress animation with the previous description when a command with shouldShowStatus returning false starts. Now, with the new build animation, it makes more sense to completely disregard those commands, both in the counting and the output. Yams now builds with the following output:

[1/7] Compiling CYaml src/writer.c
[2/7] Compiling CYaml src/parser.c
[3/7] Compiling CYaml src/reader.c
[4/7] Compiling CYaml src/emitter.c
[5/7] Compiling CYaml src/api.c
[6/7] Compiling CYaml src/scanner.c
[7/7] Compiling Swift Module 'Yams' (16 sources)

[hartbit]

@swift-ci please smoke test

[neonichu]

LGTM