Rollup merge of #102718 - compiler-errors:opaque-bound-lint-ice, r=fee1-dead

Fix `opaque_hidden_inferred_bound` lint ICE

Fixes #102705

src/test/ui/lint/issue-102705.rs

@@ -0,0 +1,22 @@
+// check-pass
+
+#![allow(opaque_hidden_inferred_bound)]
+#![allow(dead_code)]
+
+trait Duh {}
+
+impl Duh for i32 {}
+
+trait Trait {
+    type Assoc: Duh;
+}
+
+impl<R: Duh, F: FnMut() -> R> Trait for F {
+    type Assoc = R;
+}
+
+fn foo() -> impl Trait<Assoc = impl Send> {
+    || 42
+}
+
+fn main() {}