cmd/dist: skip building tools for js/wasm
cmd/dist: skip building tools for js/wasm

Fixes #25911

Change-Id: Id3b5ea5494544e9e7f889831cefaf080cae8865d
Reviewed-on: https://go-review.googlesource.com/120655
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
Run-TryBot: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

CAFxX/go,akutz/go,nawawi/go,akutz/go,golang/go,cloudflare/go,golang/go,CAFxX/go,golang/go,golang/go,nawawi/go,golang/go,cloudflare/go,josharian/go,golang/go,josharian/go,josharian/go,golang/go,nawawi/go,cloudflare/go,josharian/go,cloudflare/go,nawawi/go,josharian/go,josharian/go,nawawi/go,CAFxX/go,CAFxX/go,golang/go,cloudflare/go,cloudflare/go,akutz/go,nawawi/go,akutz/go,akutz/go,CAFxX/go,CAFxX/go,akutz/go,cloudflare/go,CAFxX/go,CAFxX/go,nawawi/go,akutz/go,cloudflare/go,akutz/go,josharian/go,nawawi/go,josharian/go