fix: （textbox、searchbar、textinput）props 支持字符串+数字

src/packages/searchbar/searchbar.vue

@@ -82,7 +82,7 @@ export default {
       default: ''
     },
     value: {
-      type: String,
+      type: [String, Number],
       default: ''
     }
   },

src/packages/textbox/textbox.vue

@@ -18,7 +18,7 @@ export default {
   name: 'nut-textbox',
   props: {
     value: {
-      type: String,
+      type: [String, Number],
       default: ''
     },
     disabled: {

src/packages/textinput/textinput.vue

@@ -26,7 +26,7 @@ export default {
   name: 'nut-textinput',
   props: {
     value: {
-      type: String,
+      type: [String, Number],
       default: ''
     },
     type: {