Only set arch on bin dir when we are building for Windows #5739

Job	Run time
launcher (ubuntu-20.04)	4m 31s
launcher (macos-12)	7m 30s
launcher (windows-latest)	8m 31s
package_builder (ubuntu-20.04)	1m 0s
package_builder (macos-12)	1m 28s
package_builder (windows-latest)	5m 11s
Version Baseline	6s
Exec Test (ubuntu-20.04)	5s
Exec Test (ubuntu-22.04)	8s
Exec Test (macos-12)	20s
Exec Test (macos-13)	19s
Exec Test (macos-14)	33s
Exec Test (windows-2019)	18s
Exec Test (windows-2022)	16s
ci_mergeable	1s
Store Artifacts (linux)	6s
Store Artifacts (macos)	13s
Store Artifacts (windows)	10s
	30m 46s

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