* Some misc clean up.
- Have been seeing counterfeiter warnings about efficiency for a while
with go:generate declaration multiple times in the same package.
Address that: https://github.com/maxbrunsfeld/counterfeiter?tab=readme-ov-file#step-2b---add-counterfeitergenerate-directives
- A bit more readability on parameters passed to `sendLeave`
* spacing
* revert some deletes as the complaint was in analytics service only
* Declare in package only once.
Although the warning is about go:generate multiple times when directly
giving the interface to generate, have `go:generate` multiple times in a
package even with `-generate` ends up generating once per invocation.
Once per package is enough to run the generation just once.
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