chore: Always add 2 chars for input size

Author: zombieJ

examples/uncontrolled.tsx

@@ -14,12 +14,16 @@ export default () => (
         locale={zhCN}
         picker="week"
         allowClear
-        style={{ width: 300 }}
       />
       <Picker<Moment>
         generateConfig={momentGenerateConfig}
         locale={zhCN}
-        picker="week"
+        picker="month"
+        allowClear
+      />
+      <Picker<Moment>
+        generateConfig={momentGenerateConfig}
+        locale={zhCN}
         allowClear
       />
       <button type="button">233</button>

src/utils/uiUtil.ts

@@ -149,7 +149,7 @@ export function getDefaultFormat(
 
 export function getInputSize(picker: PickerMode | undefined, format: string) {
   const defaultSize = picker === 'time' ? 8 : 10;
-  return Math.max(defaultSize, format.length);
+  return Math.max(defaultSize, format.length) + 2;
 }
 
 // ====================== Mode ======================