message: Switch T for V in enumerations
  Summary: We were using both haphazardly. Switch to only V.
diff: @@ -156,7 +156,7 @@ impl<'v> EnumType<'v> {
  }
  }
  -impl<'v, T: ValueLike<'v>> EnumValueGen<T> {
  +impl<'v, V: ValueLike<'v>> EnumValueGen<V> {
  /// The result of calling `type()` on an enum value.
  pub const TYPE: &'static str = "enum";
  @@ -166,7 +166,7 @@ impl<'v, T: ValueLike<'v>> EnumValueGen<T> {
  }
  }
  -impl<'v, T: ValueLike<'v>> StarlarkValue<'v> for EnumTypeGen<T>
  +impl<'v, V: ValueLike<'v>> StarlarkValue<'v> for EnumTypeGen<V>
  where
  Self: AnyLifetime<'v>,
  {
  @@ -258,7 +258,7 @@ impl<'v, V: ValueLike<'v>> StarlarkIterable<'v> for EnumTypeGen<V> {
  }
  }
  -impl<'v, T: ValueLike<'v>> StarlarkValue<'v> for EnumValueGen<T>
  +impl<'v, V: ValueLike<'v>> StarlarkValue<'v> for EnumValueGen<V>
  where
  Self: AnyLifetime<'v>,
  {
  