Method signature completion doesn't respect the custom indent size

[Tyriar]

Using Spaces: 2, there are 6 spaces in the gif below when there should only be 4

[mjbvz]

Minimal repo:

class Base {
  foo() { }
}

class Sub extends Base {
  
}

1. Change indentation to 2 spaces
2. Complete foo inside of sub

Bug
The body is still indented by four spaces

[RyanCavanaugh]

@gabritto FYI in case you want to reschedule sooner

[gabritto]

might be solved by #46832 since that PR makes it so we call the formatter for the completion text, but I'm going to check.