[moveit_configs_utils] Switch warehouse defaults to SQLite

[dlanov]

Description

Switch the generated MoveIt warehouse launch configuration from MongoDB to SQLite.

This change:

• Configures warehouse_ros_sqlite::DatabaseConnection instead of the MongoDB plugin.
• Uses moveit_warehouse_database_path as SQLite's warehouse_host database-file path.
• Stores the default database under $ROS_HOME or ~/.ros, using a config-package-specific filename.
• Removes the MongoDB wrapper process and MongoDB-specific host and port launch arguments.
• Scopes warehouse parameters to the generated move_group and RViz launches so they do not affect unrelated nodes.
• Preserves database reset support through moveit_init_demo_warehouse.
• Adds tests for the SQLite defaults, custom database paths, reset behavior, parameter scoping, and launch ordering.
• Documents the launch-argument migration in MIGRATION.md.

This PR changes the generated warehouse defaults and launch wiring only. It does not address the separate SQLite planning-scene schema issue reported in #3607.

Fixes #1296.

Testing

pre-commit run --files \
  MIGRATION.md \
  moveit_configs_utils/moveit_configs_utils/launches.py \
  moveit_configs_utils/test/test_warehouse_launch.py

colcon build \
  --packages-select moveit_configs_utils \
  --symlink-install

colcon test \
  --packages-select moveit_configs_utils

colcon test-result --verbose

Result:

7 tests, 0 errors, 0 failures, 0 skipped

Checklist

• Required by CI: Code is auto formatted using the repository pre-commit configuration.
• Extend the tutorials / documentation — not required for this generated-launch change.
• Document API changes relevant to the user in MIGRATION.md.
• Create tests which fail without this PR.
• Include a screenshot if changing a GUI — not applicable; no GUI changes.
• While waiting for review, help review another open pull request.