Update event definitions to valid product_group

Problem

Some event definitions have incorrect product_group values. Valid values can be found in https://gitlab.com/gitlab-com/www-gitlab-com/-/blob/master/data/stages.yml?ref_type=heads

Current value	Count
group::package	62
group::incubation	37
group::environments	24
group::product_planning	24
group::conversion	17
monitor	14
group::compliance	13
group::expansion	11
group::editor	10
group::optimize	8
	7
group::package registry	6
group::adoption	5
group::code review	4
group::pipeline_authoring	4
group::monitor	4
group::static_analysis	4
group::pipeline execution	4
group::global search	3
group::import and integrate	3
group::ai framework	3
group::activation	2
import	2
manage	1
group::composition_analysis	1
editor	1
group::authentication and authorization	1
integrations	1
group::foundations	1
group::global_search	1
group::source code	1
group::knowledge	1
group::ide	1
group::duo chat	1

Desired Outcome

All event definitions has valid product_group values.

Potential Solution(s)

1. Update the invalid values
2. Tighten JSON schema to only allow valid values like we do for metric definitions