Merge bitcoin#22788: scripted-diff: Use generate* from TestFramework

fa0b916 scripted-diff: Use generate* from TestFramework (MarcoFalke)

Pull request description:

  This is needed for bitcoin#22567.

  By using the newly added `generate*` member functions of the test framework, it paves the way to make it easier to implicitly call `sync_all` after block generation to avoid intermittent issues.

ACKs for top commit:
  jonatack:
    ACK fa0b916

Tree-SHA512: e74a324b60250a87c08847cdfd7b6ce3e1d89b891659fd168f6dd7dc0aa718d0edd28285374a613f462f34f4ef8e12c90ad44fb58721c91b2ea691406ad22c2a

Author: bitcoin-core-merge-script

test/functional/example_test.py

@@ -141,7 +141,7 @@ def run_test(self):
         peer_messaging = self.nodes[0].add_p2p_connection(BaseNode())
 
         # Generating a block on one of the nodes will get us out of IBD
-        blocks = [int(self.nodes[0].generate(nblocks=1)[0], 16)]
+        blocks = [int(self.generate(self.nodes[0], nblocks=1)[0], 16)]
         self.sync_all(self.nodes[0:2])
 
         # Notice above how we called an RPC by calling a method with the same

test/functional/feature_abortnode.py

@@ -26,18 +26,18 @@ def setup_network(self):
         # We'll connect the nodes later
 
     def run_test(self):
-        self.nodes[0].generate(3)
+        self.generate(self.nodes[0], 3)
         datadir = get_datadir_path(self.options.tmpdir, 0)
 
         # Deleting the undo file will result in reorg failure
         os.unlink(os.path.join(datadir, self.chain, 'blocks', 'rev00000.dat'))
 
         # Connecting to a node with a more work chain will trigger a reorg
         # attempt.
-        self.nodes[1].generate(3)
+        self.generate(self.nodes[1], 3)
         with self.nodes[0].assert_debug_log(["Failed to disconnect block"]):
             self.connect_nodes(0, 1)
-            self.nodes[1].generate(1)
+            self.generate(self.nodes[1], 1)
 
             # Check that node0 aborted
             self.log.info("Waiting for crash")