Deduplicate event_types in the events table (#89465)

* Deduplicate event_types in the events table

* Deduplicate event_types in the events table

* more fixes

* adjust

* adjust

* fix product

* fix tests

* adjust

* migrate

* migrate

* migrate

* more test fixes

* more test fixes

* fix

* migration test

* adjust

* speed up

* fix index

* fix more tests

* handle db failure

* preload

* tweak

* adjust

* fix stale docs strings, remove dead code

* refactor

* fix slow tests

* coverage

* self join to resolve query performance

* fix typo

* no need for quiet

* no need to drop index already dropped

* remove index that will never be used

* drop index sooner as we no longer use it

* Revert "remove index that will never be used"

This reverts commit 461aad2c52.

* typo

tests/conftest.py

@@ -1148,6 +1148,16 @@ def enable_migrate_context_ids() -> bool:
     return False
 
 
+@pytest.fixture
+def enable_migrate_event_type_ids() -> bool:
+    """Fixture to control enabling of recorder's event type id migration.
+
+    To enable context id migration, tests can be marked with:
+    @pytest.mark.parametrize("enable_migrate_event_type_ids", [True])
+    """
+    return False
+
+
 @pytest.fixture
 def recorder_config() -> dict[str, Any] | None:
     """Fixture to override recorder config.
@@ -1291,6 +1301,7 @@ async def async_setup_recorder_instance(
     enable_statistics: bool,
     enable_statistics_table_validation: bool,
     enable_migrate_context_ids: bool,
+    enable_migrate_event_type_ids: bool,
 ) -> AsyncGenerator[RecorderInstanceGenerator, None]:
     """Yield callable to setup recorder instance."""
     # pylint: disable-next=import-outside-toplevel
@@ -1309,6 +1320,11 @@ async def async_setup_recorder_instance(
     migrate_context_ids = (
         recorder.Recorder._migrate_context_ids if enable_migrate_context_ids else None
     )
+    migrate_event_type_ids = (
+        recorder.Recorder._migrate_event_type_ids
+        if enable_migrate_event_type_ids
+        else None
+    )
     with patch(
         "homeassistant.components.recorder.Recorder.async_nightly_tasks",
         side_effect=nightly,
@@ -1325,6 +1341,10 @@ async def async_setup_recorder_instance(
         "homeassistant.components.recorder.Recorder._migrate_context_ids",
         side_effect=migrate_context_ids,
         autospec=True,
+    ), patch(
+        "homeassistant.components.recorder.Recorder._migrate_event_type_ids",
+        side_effect=migrate_event_type_ids,
+        autospec=True,
     ):
 
         async def async_setup_recorder(