[SERVER-12536] Only allow shard key types which can be used for an _id - MongoDB Jira

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Currently an _id cannot be a:

But sharding only restricts to:

We need to add regex on the sharding side, and think about "Undefined"s behavior.

We should also think about adding code/w/scope as well.

is depended on by

SERVER-73537 `autoSplitVector` must not return invalid split points

is duplicated by

SERVER-14161 Disallow regex as shard key value

is related to

SERVER-11430 update() failure when hash sharding with regex query

SERVER-73537 `autoSplitVector` must not return invalid split points

related to

SERVER-73441 Make sure shard key bounds are valid when committing `moveRange`