Fixed CREATE SUBSCRIPTION's generated query for copy_data parameter when it is set to false. #6817

[anilsahoo20]

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[anilsahoo20]

In the CREATE subscription dialog->WITH tab,

Issue:
Initially create_slot is true, In connection tab-> once we put host name as localhost, create_slot becomes false, as the host name and port are same as server where the subscription we are creating, but once you change the port, still create_slot remains false.

Expected Result:
create_slot value is by default true, but if the host name and port are same for both publication and subscription, then create_slot will be false as the slot is not needed, because of same server, but if the host and port are different for publication and subscription, the create_slot need to be true.