Plan mode is actually implementing and making code changes

### Describe the bug

while in "Plan" mode , copilot is making code changes, that should not happen in any case.

### Affected version

latest as of right now

### Steps to reproduce the behavior

go into plan mode, tell copilot to do some "simple" changes, it will do them, instead of making a plan.

### Expected behavior

even if the plan is simple, it should create it, not just go ahead and implement it.

### Additional context

_No response_