fix: run vitest/valid-title in the type-aware pass

Function and class titles only resolve to a name through type information,
so the ESLint rule belongs in the typed pass. Classified in the split only,
not in the oxlint router, so oxlint keeps its native syntactic port.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: christopher-buss

src/eslint/type-aware-split.ts

@@ -13,6 +13,11 @@ const FUNCTIONALLY_TYPE_AWARE_RULES: ReadonlySet<string> = new Set([
 	...typeAwareJsPluginRules,
 	...optionallyTypeAwareRules,
 	"flawless/prefer-read-only-props",
+	// A function or class passed as a describe/test title only resolves to a
+	// name through type information, so the ESLint rule belongs in the typed
+	// pass. Oxlint keeps running its native port, which does the syntactic
+	// subset, so this is a split classification and not a routing decision.
+	"vitest/valid-title",
 ]);
 
 /** The type-aware split mode; see the factory's `typeAware` option. */