Fix: allow PATCH /dags to filter by tags/owners without dag_id_pattern

[justinpakzad]

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Currently the PATCH dags endpoint uses the QueryDagIdPatternSearchWithNone for the dag_id_pattern which has skip_none = False, meaning if we try to pause/unpause via tags or owners it won't work unless a value for dag_id_pattern is passed as well. This seems intentional as we wouldn't want users to accidently unpause or pause all of their dags if they mistakenly don't pass in any filters/query-params but it does pose limitations - one of them being if I try to provide the following params to the request:
params={ "update_mask": ["is_paused"], "tags": ["loader"], "tags_match_mode": "any" }
no dags would be paused even though I have dags tagged with loader. If that is the intended behavior then that's fine we should probably just update the documentation so that's clear.

The changes I'm proposing would still have the "safeguard" in place by checking if the dag_id_pattern, tags, or owners filters were passed and if not it would do something similar to what it does now and just not PATCH any of the dags. With this guard in place, we can use the existing QueryDagIdPatternSearch (which has skip_none=True) instead. This allows patching dags by tags, owners, or dag_id patterns independently.

closes: #50555

Was generative AI tooling used to co-author this PR?

• Yes (please specify the tool below)
  Claude Sonnet 4.5 (mainly for generating test dags)

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