Correct std feature-flagging

If a crate has std set, it should enable std for all dependencies in order to
let them properly select which algorithms to use. Some crates fallback to
slower/worse algorithms on no-std.

Also more aggressively sets default-features = false leading to a *10%*
reduction in the amount of crates coordinator builds.

common/std-shims/Cargo.toml

@@ -14,8 +14,8 @@ all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
-spin = { version = "0.9", features = ["mutex", "once"] }
-hashbrown = "0.14"
+spin = { version = "0.9", default-features = false, features = ["use_ticket_mutex", "once"] }
+hashbrown = { version = "0.14", default-features = false, features = ["ahash", "inline-more"] }
 
 [features]
 std = []