minor Form fixes

src/lib/components/refactor/ComposerForm.svelte

@@ -72,7 +72,13 @@
 			},
 			submitting: {
 				on: {
-					SUBMIT: 'submitted'
+					SUBMIT: 'submitted',
+					PREV: {
+						target: 'input',
+						actions: assign({
+							currentField: (context) => context.currentField - 1
+						})
+					}
 				}
 			},
 			submitted: {
@@ -119,6 +125,7 @@
 
 <div class="p-6">
 	<form on:submit|preventDefault={handleNext} on:keydown={handleKeyDown} class="w-full max-w-md">
+		{#if !$state.matches('submitting')}
 			<div class="mb-4">
 				{#if $errors[fields[$state.context.currentField].name]}
 					<span class="block mb-2 font-semibold text-red-500">
@@ -149,6 +156,7 @@
 					<NumberInput {childInput} />
 				{/if}
 			</div>
+		{/if}
 		{#if $state.matches('submitting')}
 			<div class="mb-4">
 				<h2 class="text-lg font-semibold text-white">Summary</h2>