Remove check between worker_types and max_cached_workflows

[yuandrew]

What was changed

Remove a check that max_cached_workflows must match worker_types config settings.

Why?

Decided this is an unnecessary check, worker_types already trumps other config settings for configuring which pollers to initializer.

Hopefully this reduces the number of breaks for user configs

Checklist

1. Closes

2. How was this tested:

3. Any docs updates needed?

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Note

Removes the validation that disallowed max_cached_workflows > 0 when workflows are disabled, and deletes the corresponding test.

• Validation (worker config):
  • Remove constraint preventing max_cached_workflows > 0 when task_types.enable_workflows is false in crates/common/src/worker.rs.
• Tests:
  • Delete test_workflow_cache_without_workflows_fails from crates/common/tests/worker_task_types_test.rs.

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