Add build rules for testdata

generated by `echo $(ls) | build_cleaner --nofilter_to_affected_rules` in the test folder.

Fixed broken files:
 1. list definition multiline.py
 2. mro in class_def.py (can't have inherit from the same class twice)

PiperOrigin-RevId: 446021970

Author: Pytype Team

pytype/tools/xref/testdata/class_def.py

@@ -11,11 +11,15 @@ class A:
 
 
 #- @B defines/binding ClassB
-#- @A ref ClassA
 #- ClassB.node/kind class
-class B(A):
+class B:
   pass
 
+#- @D defines/binding ClassD
+#- @A ref ClassA
+#- ClassD.node/kind class
+class D(A):
+  pass
 
 #- @Foo defines/binding ClassFoo
 #- @A ref ClassA

pytype/tools/xref/testdata/multiline.py

@@ -15,16 +15,16 @@
 
 #- @y defines/binding VarY
 #- @a ref VarA
-y = list(a,
+y = list([a,
 #- @b ref VarB
          b,
 #- @c ref VarC
-         c)
+         c])
 
 #- @x ref VarX
 #- @y ref VarY
 #- @z defines/binding VarZ
-z = (x, y)
+z = [x, y]
 
 #- @z ref VarZ
 z[1] = (1,