Fix promptForBoolean to display the default initial value capitalized (…

…#1829)

* Fix promptForBoolean to display the default initial value capitalized

* Fix lint

src/lib/dev-environment/dev-environment-cli.ts

@@ -611,7 +611,8 @@ export function promptForBoolean( message: string, initial: boolean ): Promise<
 	if ( isStdinTTY ) {
 		const confirm = new Confirm( {
 			message,
-			initial: initial.toString(),
+			// eslint-disable-next-line @typescript-eslint/no-explicit-any,@typescript-eslint/no-unsafe-assignment
+			initial: initial as any, // TS definition is wrong, so we need to bypass it to show the correct hint.
 		} );
 
 		return confirm.run();