chore: rework cursor types to manually deser for correct behavior

Author: Evalir

crates/tx-cache/Cargo.toml

@@ -21,4 +21,8 @@ eyre.workspace = true
 reqwest.workspace = true
 serde = { workspace = true, features = ["derive"] }
 tracing.workspace = true
-uuid = { workspace = true, features = ["serde"] }
+uuid = { workspace = true, features = ["serde"] }
+
+[dev-dependencies]
+serde_urlencoded = "0.7.1"
+uuid = { workspace = true, features = ["serde", "v4"] }