message: Simplify Parameters::new
  Summary: Just call with_capacity, removing duplicate code.
diff: @@ -117,15 +117,7 @@ pub struct ParametersSpec<V>(ParametersSpecRaw<V>);
  impl<V> ParametersSpecBuilder<V> {
  /// Create a new [`ParametersSpecBuilder`] with the given function name.
  pub fn new(function_name: String) -> Self {
  - Self(ParametersSpecRaw {
  - function_name,
  - kinds: Vec::new(),
  - names: SmallMap::new(),
  - positional: 0,
  - no_args: false,
  - args: None,
  - kwargs: None,
  - })
  + Self::with_capacity(function_name, 0)
  }
  /// Create a new [`ParametersSpecBuilder`] with the given function name and an advance capacity hint.
  