fix: stop emitting bus events on go mod events

[willmurphyscode]

Previously, the TUI would hang when scanning directories with lots of go packages, possibly because this path was spamming the TUI with too many events. Since checking on a particular go module is fast, don't show TUI events for each one.

Fixes #2653 .

Manual Testing

echo 'golang:
   # search for go package licences in the GOPATH of the system running Syft, note that this is outside the
   # container filesystem and potentially outside the root of a local directory scan
   # SYFT_GOLANG_SEARCH_LOCAL_MOD_CACHE_LICENSES env var
   search-local-mod-cache-licenses: true

   # specify an explicit go mod cache directory, if unset this defaults to $GOPATH/pkg/mod or $HOME/go/pkg/mod
   # SYFT_GOLANG_LOCAL_MOD_CACHE_DIR env var
   local-mod-cache-dir: ""

   # search for go package licences by retrieving the package from a network proxy
   # SYFT_GOLANG_SEARCH_REMOTE_LICENSES env var
   search-remote-licenses: true

   # remote proxy to use when retrieving go packages from the network,
   # if unset this defaults to $GOPROXY followed by https://proxy.golang.org
   # SYFT_GOLANG_PROXY env var
   proxy: ""

   # specifies packages which should not be fetched by proxy
   # if unset this defaults to $GONOPROXY
   # SYFT_GOLANG_NOPROXY env var
   no-proxy: ""' > .syft.yaml
go build -o /tmp/nsyft cmd/syft/main.go
/tmp/nsyft ~/work/clio # just a directory with a lot of go dependencies

On main, this hangs, but on the current branch, it does not. Happy to add additional testing but not sure how to repro the hang in CI.