Fix no-inline-named-types to match required members only

Ignore optional members instead of skipping the entire type.
{ x: number; y: number; label?: string } now correctly flags as
Vector, while { x?: number; y?: number } is still ignored.

lint/plugin.ts

@@ -28,9 +28,10 @@ const noInlineNamedTypes = {
         )
         if (!props || props.length < 2) return
 
-        if (props.some((m) => m.optional)) return
+        const required = props.filter((m) => !m.optional)
+        if (required.length < 2) return
 
-        const shape = props
+        const shape = required
           .map((m) => {
             const typeNode = m.typeAnnotation?.typeAnnotation
             let typeName = 'unknown'