dashboard: enable trybots for js/wasm
dashboard: enable trybots for js/wasm

Fixes golang/go#26015

Change-Id: I25656a8e2918196cf950e29184c783503da9f905
Reviewed-on: https://go-review.googlesource.com/120775
Reviewed-by: Andrew Bonventre <682ad9f487f614f19e8b7cc5d340bdc8e1c1b128@golang.org>

golang/build,golang/build,golang/build,golang/build