fix(cli/cliui): apply defaults when rendering select prompts (#22093)

The `--parameter-default` value is now used to pre-select the default option for a coder parameter
with option blocks when prompting interactively in CLI.

Related to: https://github.com/coder/coder/issues/22078

cli/cliui/select.go

@@ -123,6 +123,10 @@ func Select(inv *serpent.Invocation, opts SelectOptions) (string, error) {
 		initialModel.height = defaultSelectModelHeight
 	}
 
+	if idx := slices.Index(opts.Options, opts.Default); idx >= 0 {
+		initialModel.cursor = idx
+	}
+
 	initialModel.search.Prompt = ""
 	initialModel.search.Focus()