[User Feedback] Consider enabled_environments

[sentry]

Sentry Feedback: JAVASCRIPT-2SAH

Metrics should consider config.enabled_environments = ['staging', 'production']

should not track metrics for development env

contact_email	michaels@tripletech.co.il
name	Michael Shapiro
source	new_feedback_envelope

[matejminar]

Thanks for the feedback, we'll address this in getsentry/sentry-ruby#2287.

In the meantime, we recommend utilizing a common before_emit_metrics hook in the SDK to filter out metrics you want to be ignored (e.g., based on environment).