server: -O1 + -funfolding-use-threshold=640, for memory residency
This increases compile times for full build of exe:graphql-engine from
13min to 16min on my machine, less on CI.
NOTE: O1 on its own improves compile time slightly (~80 sec) and doesn't
negatively impact performance at all, seemingly:
https://github.com/hasura/graphql-engine-mono/pull/7029
GitOrigin-RevId: 040851acb57f63943a48da03004c40e31c333c75