Fix prompt binding

Author: nojaf

src/RescriptVersions.res

@@ -38,7 +38,7 @@ let promptVersions = async () => {
     let options = rescriptVersions->Array.map(v => {P.value: v})
 
     let initialValue =
-      options->Array.find(o => o.value->String.startsWith("11."))
+      options->Array.find(o => o.value->String.startsWith("11."))->Option.map(o => o.value)
 
     let selectOptions = 
       switch initialValue {

src/bindings/ClackPrompts.res

@@ -38,7 +38,7 @@ type selectOption = {
 type selectOptions = {
   message: string,
   options: array<selectOption>,
-  initialValue?: selectOption,
+  initialValue?: string,
 }
 
 @module("@clack/prompts")