fix(migrations): 0035's revision id fits alembic_version (32 chars) (#5374)

"0035_drop_plugin_catalog_settings" is 33 characters, and
alembic_version.version_num is VARCHAR(32), so the upgrade failed with
"value too long" (CI run 8800, integration). Renamed to
0035_drop_plugin_catalog. tests/test_migration_ids.py now checks every core
and plugin revision id fits, in the unit lane, which never migrates.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

steward/migrations/versions/0035_drop_plugin_catalog.py

@@ -5,7 +5,7 @@ image and a third-party plugin is a folder the operator mounts, so nothing reads
 `plugins.index_url` or `plugins.repositories` any more. The removed feature
 takes its rows with it, as 0025 did for the http plugin.
 
-Revision ID: 0035_drop_plugin_catalog_settings
+Revision ID: 0035_drop_plugin_catalog
 Revises: 0034_user_time_zone
 Create Date: 2026-10-08
 """
@@ -13,7 +13,7 @@ from typing import Sequence, Union
 from alembic import op
 import sqlalchemy as sa
 
-revision: str = "0035_drop_plugin_catalog_settings"
+revision: str = "0035_drop_plugin_catalog"
 down_revision: Union[str, None] = "0034_user_time_zone"
 branch_labels: Union[str, Sequence[str], None] = None
 depends_on: Union[str, Sequence[str], None] = None