[ty] Improve disambiguation of class names in diagnostics (#20603)

crates/ty_python_semantic/resources/mdtest/diagnostics/same_names.md

@@ -43,8 +43,7 @@ import b
 df: a.DataFrame = b.DataFrame()  # error: [invalid-assignment] "Object of type `b.DataFrame` is not assignable to `a.DataFrame`"
 
 def _(dfs: list[b.DataFrame]):
-    # TODO should be"Object of type `list[b.DataFrame]` is not assignable to `list[a.DataFrame]`
-    # error: [invalid-assignment] "Object of type `list[DataFrame]` is not assignable to `list[DataFrame]`"
+    # error: [invalid-assignment] "Object of type `list[b.DataFrame]` is not assignable to `list[a.DataFrame]`"
     dataframes: list[a.DataFrame] = dfs
 ```
 
@@ -228,3 +227,21 @@ from typing import TypedDict
 class Person(TypedDict):
     name: bytes
 ```
+
+## Tuple specializations
+
+`module.py`:
+
+```py
+class Model: ...
+```
+
+```py
+class Model: ...
+
+def get_models_tuple() -> tuple[Model]:
+    from module import Model
+
+    # error: [invalid-return-type] "Return type does not match returned value: expected `tuple[mdtest_snippet.Model]`, found `tuple[module.Model]`"
+    return (Model(),)
+```

crates/ty_python_semantic/resources/mdtest/public_types.md

@@ -339,7 +339,7 @@ class A: ...
 
 def f(x: A):
     # TODO: no error
-    # error: [invalid-assignment] "Object of type `A | A` is not assignable to `A`"
+    # error: [invalid-assignment] "Object of type `mdtest_snippet.A | mdtest_snippet.A` is not assignable to `mdtest_snippet.A`"
     x = A()
 ```