[ruff,ty] Enable tracing's log feature

This has the effect of emitting tracing events via `log`
whenever there isn't an active tracing subscriber present.

This makes it so `ty_wasm` logs tracing messages to the
JavaScript console automatically (via our use of `console_log`).

Cargo.lock

@@ -4449,6 +4449,7 @@ dependencies = [
  "ruff_source_file",
  "ruff_text_size",
  "serde-wasm-bindgen",
+ "tracing",
  "ty_ide",
  "ty_project",
  "ty_python_semantic",

crates/ty_wasm/Cargo.toml

@@ -40,6 +40,7 @@ log = { workspace = true }
 # See https://docs.rs/getrandom/latest/getrandom/#webassembly-support
 getrandom = { workspace = true, features = ["wasm_js"] }
 serde-wasm-bindgen = { workspace = true }
+tracing = { workspace = true, features = ["log"] }
 # Not a direct dependency but required to compile for Wasm.
 uuid = { workspace = true, features = ["js"] }
 
@@ -50,3 +51,7 @@ wasm-bindgen-test = { workspace = true }
 
 [lints]
 workspace = true
+
+[package.metadata.cargo-shear]
+# Depended on only to enable `log` feature as of 2025-10-03.
+ignored = ["tracing"]