Auto merge of #142921 - JonathanBrouwer:rustc_attributes_parser, r=oli-obk

Port `#[rustc_layout_scalar_valid_range_start/end]` to the new attrib…

Ports `rustc_layout_scalar_valid_range_start` and `rustc_layout_scalar_valid_range_end` to the new attribute parsing infrastructure for https://github.com/rust-lang/rust/issues/131229#issuecomment-2971353197

r? `@jdonszelmann`

compiler/rustc_attr_parsing/src/attributes/mod.rs

@@ -36,6 +36,7 @@ pub(crate) mod lint_helpers;
 pub(crate) mod loop_match;
 pub(crate) mod must_use;
 pub(crate) mod repr;
+pub(crate) mod rustc_internal;
 pub(crate) mod semantics;
 pub(crate) mod stability;
 pub(crate) mod traits;