feat: support more expressions on temporal filter's now() expression

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The issue is that the temporal filter plays an important role in state cleaning, so We must ensure that the state of the temporal filter will not increase without limit and with the same cardinality with the input relation.

• allow conditions like ts < expr(now()) in temporal filter #17630
• derive watermark for temporal filters with condition ts >/>= expr(now()) #17629

And we still need to implement the corresponding state-cleaning logic in the dynamic filter