[core] Enable ruff B (flake8-bugbear) lint family (#16655)

tests/component_tests/display/test_display_metadata.py

@@ -2,6 +2,8 @@
 
 from unittest.mock import patch
 
+import pytest
+
 from esphome.components.display import (
     DisplayMetaData,
     add_metadata,
@@ -74,8 +76,5 @@ def test_add_metadata_overwrites_existing():
 def test_metadata_is_frozen():
     """Test that DisplayMetaData instances are immutable (frozen dataclass)."""
     meta = DisplayMetaData(320, 240, True, False)
-    try:
+    with pytest.raises(AttributeError):
         meta.width = 640
-        assert False, "Expected FrozenInstanceError"
-    except AttributeError:
-        pass

tests/component_tests/packages/test_packages.py

@@ -510,15 +510,9 @@ def test_package_merge_by_missing_id() -> None:
         ],
     }
 
-    error_raised = False
-    try:
+    with pytest.raises(cv.Invalid) as exc_info:
         packages_pass(config)
-        assert False, "Expected validation error for missing ID"
-    except cv.Invalid as err:
-        error_raised = True
-        assert err.path == [CONF_SENSOR, 2]
-
-    assert error_raised
+    assert exc_info.value.path == [CONF_SENSOR, 2]
 
 
 def test_package_list_remove_by_id() -> None: