Disable parentheses level discovery for method calls for groovy 2

[jevanlingen]

What's changed?

Disable parentheses level discovery for methods for Groovy 2.

What's your motivation?

Groovy 2 does not contain the information we need, it always return -1 for the method calls object-expression. In older version of the groovy-parser this did not cause any exceptions, but since

• More robust Groovy parentheses handling #4951

it does.

Notice before PR #4951, the parser did also not support parentheses level discovery for methods for Groovy 2, but I did not throw an errors by chance.

Any additional context

Would be nice to have a real working solution for Groovy 2 as well. But let's focus on that at a later stage.

[timtebeek]

Great to have this fixed ahead of the release, thanks!

[sambsnyd]

Thanks!