Make proc_macro_derive_resolution_fallback a future-breakage lint

When `cargo report future-incompatibilities` is stabilized
(see #71249), this will cause dependencies that trigger
this lint to be included in the report.

compiler/rustc_lint_defs/src/builtin.rs

@@ -1960,6 +1960,7 @@ declare_lint! {
     "detects proc macro derives using inaccessible names from parent modules",
     @future_incompatible = FutureIncompatibleInfo {
         reference: "issue #83583 <https://github.com/rust-lang/rust/issues/83583>",
+        reason: FutureIncompatibilityReason::FutureReleaseErrorReportNow,
     };
 }