Rollup merge of #113319 - lcnr:type-param-def-def-id, r=compiler-errors

`TypeParameterDefinition` always require a `DefId`

the `None` case never actually reaches diagnostics so it feels better for diagnostics to be able to rely on the `DefId` being there, cc #113310

compiler/rustc_infer/src/infer/mod.rs

@@ -1110,7 +1110,7 @@ impl<'tcx> InferCtxt<'tcx> {
                     TypeVariableOrigin {
                         kind: TypeVariableOriginKind::TypeParameterDefinition(
                             param.name,
-                            Some(param.def_id),
+                            param.def_id,
                         ),
                         span,
                     },