Python: Fix tests

With `ModuleVariableNode`s now appearing for _all_ global variables (not
just the ones that actually seem to be used), some of the tests changed
a bit. Mostly this was in the form of new flow (because of new nodes
that popped into existence). For some inline expectation tests, I opted
to instead exclude these results, as there was no suitable location to
annotate. For the normal tests, I just accepted the output (after having
vetted it carefully, of course).

python/ql/test/library-tests/frameworks/internal-ql-helpers/PoorMansFunctionResolutionTest.ql

@@ -17,7 +17,9 @@ module InlinePoorMansFunctionResolutionTest implements TestSig {
       ) and
       // exclude decorator calls (which with our extractor rewrites does reference the
       // function)
-      not ref.asExpr() = func.getDefinition().(FunctionExpr).getADecoratorCall()
+      not ref.asExpr() = func.getDefinition().(FunctionExpr).getADecoratorCall() and
+      // exclude ModuleVariableNodes (which have location 0:0:0:0)
+      not ref instanceof DataFlow::ModuleVariableNode
     |
       value = func.getName() and
       tag = "resolved" and