fix(workflow_engine): Make UniqueConditionQuery hashable with list filters

[seer-by-sentry]

Fixes SENTRY-41GH. The issue was that: UniqueConditionQuery used as dictionary key contains unhashable list in filters field, causing TypeError.

• Converts list of dicts to tuple of frozensets for filters in UniqueConditionQuery to make it hashable.
• Adds tests to ensure UniqueConditionQuery is hashable with and without filters, and that filters are properly converted.

Legal Boilerplate

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
26548	1	26547	223

View the top 1 failed test(s) by shortest run time

tests.sentry.workflow_engine.processors.test_delayed_workflow.TestDelayedWorkflowQueries::test_unique_condition_query_hashable_with_filters

Stack Traces | 3.3s run time

#x1B[1m#x1B[.../workflow_engine/processors/test_delayed_workflow.py#x1B[0m:378: in test_unique_condition_query_hashable_with_filters
    dc_with_filters = self.create_data_condition(
#x1B[1m#x1B[.../sentry/testutils/fixtures.py#x1B[0m:634: in create_data_condition
    return Factories.create_data_condition(
#x1B[1m#x1B[.../hostedtoolcache/Python/3.13.1.../x64/lib/python3.13/contextlib.py#x1B[0m:85: in inner
    return func(*args, **kwds)
#x1B[1m#x1B[.../sentry/testutils/factories.py#x1B[0m:2190: in create_data_condition
    return DataCondition.objects.create(condition_group=condition_group, **kwargs)
#x1B[1m#x1B[.../sentry/silo/base.py#x1B[0m:158: in override
    return original_method(*args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.13.../db/models/manager.py#x1B[0m:87: in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
#x1B[1m#x1B[.../sentry/silo/base.py#x1B[0m:158: in override
    return original_method(*args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.13.../db/models/query.py#x1B[0m:663: in create
    obj.save(force_insert=True, using=self.db)
#x1B[1m#x1B[.../sentry/silo/base.py#x1B[0m:158: in override
    return original_method(*args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.13.../db/models/base.py#x1B[0m:902: in save
    self.save_base(
#x1B[1m#x1B[.../sentry/silo/base.py#x1B[0m:158: in override
    return original_method(*args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.13.../db/models/base.py#x1B[0m:988: in save_base
    pre_save.send(
#x1B[1m#x1B[.../testutils/pytest/stale_database_reads.py#x1B[0m:99: in send
    return old_send(self, sender, **named)
#x1B[1m#x1B[31m.venv/lib/python3.13.../django/dispatch/dispatcher.py#x1B[0m:189: in send
    response = receiver(signal=self, sender=sender, **named)
#x1B[1m#x1B[.../workflow_engine/models/data_condition.py#x1B[0m:271: in enforce_comparison_schema
    enforce_data_condition_json_schema(instance)
#x1B[1m#x1B[.../workflow_engine/models/data_condition.py#x1B[0m:266: in enforce_data_condition_json_schema
    raise ValidationError(f"Invalid config: {e.message}")
#x1B[1m#x1B[31mE   jsonschema.exceptions.ValidationError: Invalid config: {'field': 'value1'} is not valid under any of the given schemas#x1B[0m

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