Properly handle disallowed_types

tests/ui-toml/replaceable_disallowed_types/clippy.toml

@@ -0,0 +1,3 @@
+disallowed-types = [
+    { path = "std::string::String", replacement = "wrapper::String" },
+]

tests/ui-toml/replaceable_disallowed_types/replaceable_disallowed_types.fixed

@@ -0,0 +1,16 @@
+#![warn(clippy::disallowed_types)]
+
+#[allow(clippy::disallowed_types)]
+mod wrapper {
+    pub struct String(std::string::String);
+
+    impl From<&str> for String {
+        fn from(value: &str) -> Self {
+            Self(std::string::String::from(value))
+        }
+    }
+}
+
+fn main() {
+    let _ = wrapper::String::from("x");
+}

tests/ui-toml/replaceable_disallowed_types/replaceable_disallowed_types.rs

@@ -0,0 +1,16 @@
+#![warn(clippy::disallowed_types)]
+
+#[allow(clippy::disallowed_types)]
+mod wrapper {
+    pub struct String(std::string::String);
+
+    impl From<&str> for String {
+        fn from(value: &str) -> Self {
+            Self(std::string::String::from(value))
+        }
+    }
+}
+
+fn main() {
+    let _ = String::from("x");
+}

tests/ui-toml/replaceable_disallowed_types/replaceable_disallowed_types.stderr

@@ -0,0 +1,11 @@
+error: use of a disallowed type `std::string::String`
+  --> tests/ui-toml/replaceable_disallowed_types/replaceable_disallowed_types.rs:15:13
+   |
+LL |     let _ = String::from("x");
+   |             ^^^^^^ help: use: `wrapper::String`
+   |
+   = note: `-D clippy::disallowed-types` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::disallowed_types)]`
+
+error: aborting due to 1 previous error
+