chore: Add SessionState to MockContextProvider just like SessionContextProvider

[dharanad]

Is your feature request related to a problem or challenge?

          I prefer not to re-introduce `with_expr_planner` back for context provider.

It is better to use session state in context, and add planner into session state.

Similar to SessionContextProvider

struct SessionContextProvider<'a> {
    state: &'a SessionState,
    ...
}

Originally posted by @jayzhan211 in #11487 (comment)

This is cleanup task to remove functions like with_udaf with_expr_planner from MockContextProvider and make it consistent with public interfaces. We need to update all the testcases which are affected by this change.

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Describe alternatives you've considered

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Additional context

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[dharanad]

take