Scope
Use std::numeric_limits<double>::lowest(), not std::numeric_limits<double>::min(), for the default index minimum value for double.

std::numeric_limits<double>::min() is used in the following locations:

• https://github.com/10gen/mongo-enterprise-modules/blob/6c4838bb372038ed54b70a60ef33e1fd32b90acd/src/fle/query_analysis/encryption_schema_tree.cpp#L553
• https://github.com/mongodb/mongo/blob/0b52d4cbc8610b5b42f62ff5ac1f1d6a4b47180b/src/mongo/crypto/encryption_fields_validation.cpp#L106

Background & Motivation

SERVER-70066 applied changes to prohibit setting a custom minimum and maximum index value for double. std::numeric_limits<double>::min() returns the minimum positive normalized value.
The expected behavior is to use std::numeric_limits<double>::lowest(), the lowest negative value.

The index min/max has no impact on how double is encoded in getTypeInfoDouble. But it is applied to getMinCover when an infinite bound is specified:

https://github.com/mongodb/mongo/blob/d82601cca796acb046db331fd08ab222da7cb316/src/mongo/crypto/fle_crypto.cpp#L1499-L1504