Rename load-time-waste tests to from_mike, matching #687's renamed API

These two tests (originally 57e8611 on PR #685) called the removed
Network.from_res1d, since #685 forked before #687 renamed it to
from_mike/from_epanet. The rebase applied them without a merge conflict
because the surrounding lines didn't overlap textually, but the calls
were left broken. Rename the test functions too, matching the
test_from_mike_* convention used elsewhere in this file.

Author: jpalm3r

tests/test_network.py

@@ -638,14 +638,14 @@ def test_from_mike_empty_nodes_and_reaches_keeps_topology_and_empty_outputs():
 @pytest.mark.skipif(
     sys.version_info >= (3, 14), reason="mikeio1d requires Python < 3.14"
 )
-def test_from_res1d_topology_only_locations_share_one_empty_frame():
+def test_from_mike_topology_only_locations_share_one_empty_frame():
     """Topology-only locations must not each allocate their own empty frame.
 
     That is two DataFrame allocations per reach, which profiling showed to be
     the single largest cost of a filtered load (gh #679).
     """
     path_to_file = "./tests/testdata/network.res1d"
-    network = Network.from_res1d(path_to_file, nodes=[], reaches=[])
+    network = Network.from_mike(path_to_file, nodes=[], reaches=[])
     g = network.graph
 
     frames = [g.nodes[n]["data"] for n in g.nodes]
@@ -656,7 +656,7 @@ def test_from_res1d_topology_only_locations_share_one_empty_frame():
 @pytest.mark.skipif(
     sys.version_info >= (3, 14), reason="mikeio1d requires Python < 3.14"
 )
-def test_from_res1d_reads_each_selected_node_once(monkeypatch):
+def test_from_mike_reads_each_selected_node_once(monkeypatch):
     """A node shared by several reaches is read once, not once per reach.
 
     _generate_graph keeps only the first copy of a node's data, so the repeat
@@ -676,7 +676,7 @@ def counting_simplify_colnames(location, *args, **kwargs):
     monkeypatch.setattr(_res1d, "_simplify_colnames", counting_simplify_colnames)
 
     path_to_file = "./tests/testdata/network.res1d"
-    network = Network.from_res1d(path_to_file, reaches=[])
+    network = Network.from_mike(path_to_file, reaches=[])
 
     n_unique_nodes = len(
         {reach.start.id for reach in network._reaches.values()}