Use TypedDict fallback as its suggestion representation (#7606)

mypy/suggestions.py

diff --git a/mypy/suggestions.py b/mypy/suggestions.py
index 19879de..427655e 100644
--- a/mypy/suggestions.py
+++ b/mypy/suggestions.py
@@ -33,6 +33,7 @@
     TypeVarType, FunctionLike,
     TypeStrVisitor, TypeTranslator,
     is_optional, remove_optional, ProperType, get_proper_type,
+    TypedDictType
 )
 from mypy.build import State, Graph
 from mypy.nodes import (
@@ -711,6 +712,9 @@
         s = self.list_str(t.items)
         return 'Tuple[{}]'.format(s)
 
+    def visit_typeddict_type(self, t: TypedDictType) -> str:
+        return t.fallback.accept(self)
+
     def visit_union_type(self, t: UnionType) -> str:
         if len(t.items) == 2 and is_optional(t):
             return "Optional[{}]".format(remove_optional(t).accept(self))

test-data/unit/fine-grained-suggest.test

diff --git a/test-data/unit/fine-grained-suggest.test b/test-data/unit/fine-grained-suggest.test
index b069211..490d976 100644
--- a/test-data/unit/fine-grained-suggest.test
+++ b/test-data/unit/fine-grained-suggest.test
@@ -139,6 +139,20 @@
 () -> foo.N
 ==
 
+[case testSuggestInferTypedDict]
+# suggest: foo.foo
+[file foo.py]
+from typing_extensions import TypedDict
+TD = TypedDict('TD', {'x': int})
+def foo():
+    return bar()
+
+def bar() -> TD: ...
+[builtins fixtures/dict.pyi]
+[out]
+() -> foo.TD
+==
+
 [case testSuggestReexportNaming]
 # suggest: foo.foo
 [file foo.py]