Disable FSRS by default in test helper function

Add Config import and disable FSRS in getEmptyCol() helper function.
This ensures all tests using this helper function have FSRS disabled
by default, maintaining compatibility with legacy scheduler tests.

pylib/tests/shared.py

@@ -9,6 +9,7 @@ import tempfile
 import time
 
 from anki.collection import Collection as aopen
+from anki.config import Config
 
 # Between 2-4AM, shift the time back so test assumptions hold.
 lt = time.localtime()
@@ -49,6 +50,8 @@ def getEmptyCol():
     (fd, path) = tempfile.mkstemp(suffix=".anki2")
     shutil.copy(_emptyCol, path)
     col = aopen(path)
+    # Disable FSRS for legacy scheduler tests
+    col.set_config_bool(Config.Bool.FSRS, False, undoable=False)
     return col