fix(testenv): disable downloads (bitcoind and electrsd) for docs.rs builds of crate testenv

Author: riverKanies

crates/testenv/Cargo.toml

@@ -17,9 +17,13 @@ workspace = true
 
 [dependencies]
 bdk_chain = { path = "../chain", version = "0.20.0", default-features = false }
-electrsd = { version = "0.28.0", features = [ "bitcoind_25_0", "esplora_a33e97e1", "legacy" ] }
+electrsd = { version = "0.28.0", features = [ "legacy" ] }
 
 [features]
-default = ["std"]
+default = ["std", "download"]
+download = ["electrsd/bitcoind_25_0", "electrsd/esplora_a33e97e1"]
 std = ["bdk_chain/std"]
 serde = ["bdk_chain/serde"]
+
+[package.metadata.docs.rs]
+no-default-features = true