Support allowMaterializedViewsWithoutRowLevelSecurity on RLS policies

[ashleyvansp]

This pull request adds support for the AllowMaterializedViewsWithoutRowLevelSecurity flag on row level security policies.

cc https://github.com/github/data/issues/9480

[Copilot]

Pull request overview

Adds support for the allowMaterializedViewsWithoutRowLevelSecurity option when handling row-level security (RLS) policies, so the tool can round-trip this setting between Kusto and the YAML/model representation.

Changes:

• Extend table RLS loading to detect and persist allowMaterializedViewsWithoutRowLevelSecurity.
• Migrate the newly loaded flag from legacy Table fields into the unified Policies model during cleanup.
• Emit the with (allowMaterializedViewsWithoutRowLevelSecurity=true) clause when generating RLS enable scripts.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
KustoSchemaTools/Parser/KustoLoader/KustoTableBulkLoader.cs	Attempts to detect/remove the new with (...) clause when parsing .show database schema as csl script for table RLS.
KustoSchemaTools/Parser/DatabaseCleanup.cs	Copies the loaded legacy flag into policy.AllowMaterializedViewsWithoutRowLevelSecurity.
KustoSchemaTools/Model/Table.cs	Adds an obsolete legacy field to temporarily hold the loaded flag before consolidation into Policies.
KustoSchemaTools/Model/Policy.cs	Adds the flag to policies and emits the with (...) clause when generating RLS scripts.

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[whitleykeith]

🙈 ✅