chore: rename LabelConfig -> AriaLabelConfig, update dict names

packages/svelte/src/lib/components/A11yDescriptions/A11yDescriptions.svelte

@@ -8,11 +8,11 @@
 
 <div id={`${ARIA_NODE_DESC_KEY}-${store.flowId}`} class="a11y-hidden">
   {store.disableKeyboardA11y
-    ? store.labelConfig['a11yDescription.node.default']
-    : store.labelConfig['a11yDescription.node.keyboardDisabled']}
+    ? store.ariaLabelConfig['node.a11yDescription.default']
+    : store.ariaLabelConfig['node.a11yDescription.keyboardDisabled']}
 </div>
 <div id={`${ARIA_EDGE_DESC_KEY}-${store.flowId}`} class="a11y-hidden">
-  {store.labelConfig['a11yDescription.edge.default']}
+  {store.ariaLabelConfig['edge.a11yDescription.default']}
 </div>
 
 {#if !store.disableKeyboardA11y}

packages/svelte/src/lib/components/Handle/Handle.svelte

@@ -44,7 +44,7 @@
   );
 
   let store = useStore();
-  let labelConfig = $derived(store.labelConfig);
+  let ariaLabelConfig = $derived(store.ariaLabelConfig);
 
 
   let prevConnections: Map<string, HandleConnection> | null = null;
@@ -229,7 +229,7 @@ The Handle component is the part of a node that can be used to connect nodes.
   onkeypress={() => {}}
   {style}
   role="button"
-  aria-label={labelConfig[`handle.ariaLabel`]}
+  aria-label={ariaLabelConfig[`handle.ariaLabel`]}
   tabindex="-1"
   {...rest}
 >

packages/svelte/src/lib/components/NodeWrapper/NodeWrapper.svelte

@@ -85,7 +85,7 @@
   let prevTargetPosition: Position | undefined = targetPosition;
 
   let NodeComponent = $derived(store.nodeTypes[type] ?? DefaultNode);
-  let labelConfig = $derived(store.labelConfig);
+  let ariaLabelConfig = $derived(store.ariaLabelConfig);
 
   let connectableContext: ConnectableContext = {
     get value() {
@@ -189,7 +189,7 @@
     ) {
       // prevent default scrolling behavior on arrow key press when node is moved
       event.preventDefault();
-      store.ariaLiveMessage = labelConfig['a11yDescription.ariaLiveMessage']({
+      store.ariaLiveMessage = ariaLabelConfig['a11yDescription.ariaLiveMessage']({
         direction: event.key.replace('Arrow', '').toLowerCase(),
         x: ~~node.internals.positionAbsolute.x,
         y: ~~node.internals.positionAbsolute.y