Merge request events 触发 webhook 颗粒度问题

Experiment summary

客户使用合并请求事件触发webhook，但是在以上截图的合并请求事件中都会触发。

是否可以控制合并请求事件的精细度。

Hypothesis

Business problem

Supporting data

Expected outcome

Experiment design & implementation

ICE score

Impact	Confidence	Ease	Score
value 1	value 2	value 3	Average(1:3)

Known assumptions

Results, lessons learned, next steps

Checklist

• Fill in the experiment summary and write more about the details of the experiment in the rest of the issue description. Some of these may be filled in through time (the "Result, learnings, next steps" section for example) but at least the experiment summary should be filled in right from the start.
• Add the label of the group:: that will work on this experiment (if known).
• Mention the Product Manager, Engineering Manager, and at least one Product Designer from the group that owns the part of the product that the experiment will affect.
• Fill in the values in the ICE score table ping other team members for the values you aren’t confident about (i.e. engineering should almost always fill out the ease section). Add the ~"ICE Score Needed" label to indicate that the score is incomplete.
• Replace the ~"ICE Score Needed" with an ICE low/medium/high score label once all values in the ICE table have been added.
• Mention the [at]gitlab-core-team team and ask for their feedback.