Fix weave import side-effects when enable_weave=False

Previously, the wandb experiment tracker imported weave and called
weave.init(..., settings={"disabled": True}) even when enable_weave
was False. With weave >= 0.52.17, simply importing weave triggers
wandb_init_hook and remote project creation, causing PERMISSION_ERROR
for users not logged in.

The fix removes the unnecessary else branch entirely. When
enable_weave=False, we now skip all weave-related code, preventing
any import side-effects.

Author: strickvl

src/zenml/integrations/wandb/experiment_trackers/wandb_experiment_tracker.py

@@ -180,12 +180,3 @@ def _initialize_wandb(
                     "Weave enabled but no project_name specified. "
                     "Skipping weave initialization."
                 )
-        else:
-            import weave
-
-            if self.config.project_name:
-                logger.info("Disabling weave")
-                weave.init(
-                    project_name=self.config.project_name,
-                    settings={"disabled": True},
-                )