PY-74231 Fix false positive "Statement expected, found Py:DEDENT" for a nested type alias

GitOrigin-RevId: 03d64abe2c949a5912eb5c16ef48a5149568d66f

python/python-parser/src/com/jetbrains/python/parsing/StatementParsing.java

@@ -147,6 +147,7 @@ public class StatementParsing extends Parsing implements ITokenTypeRemapper {
     parseTypeParameterList();
     checkMatches(PyTokenTypes.EQ, PyParsingBundle.message("PARSE.eq.expected"));
     myContext.getExpressionParser().parseExpression();
+    checkEndOfStatement();
     mark.done(PyElementTypes.TYPE_ALIAS_STATEMENT);
     return true;
   }