Fix testing wit-parser standalone

Author: alexcrichton

crates/wit-parser/Cargo.toml

@@ -27,7 +27,7 @@ serde_derive = { workspace = true, optional = true }
 serde_json = { workspace = true, optional = true }
 unicode-xid = "0.2.2"
 wasmparser = { workspace = true, optional = true, features = ['std', 'validate', 'component-model', 'features'] }
-wat = { workspace = true, optional = true }
+wat = { workspace = true, optional = true, features = ['component-model'] }
 
 [features]
 default = ['serde', 'decoding']