fix: Support input prop override in Field component (#1066)

Fixes #1048

In v6.x, users could pass an `input` prop to override or extend the
field's input properties. This broke in v7.0.0 because the `input` prop
wasn't being destructured and merged with `field.input`.

Changes:
- Destructure `input` prop from Field component props
- Merge provided `input` with `field.input` (user props take precedence)
- Add `input?: Partial<FieldInputProps>` to FieldProps interface
- Apply merged input to all render paths (children function, string component, custom component)

This restores v6.x behavior while maintaining v7.0.0 improvements.

Example usage:
```tsx
<Field
  name="email"
  component={MyInput}
  input={{
    onChange: customOnChange,  // Override onChange
    value: customValue,        // Override value
  }}
/>
```

Co-authored-by: erikras-gilfoyle-agent <gilfoyle@openclaw.local>

Author: erikras-gilfoyle-agent

src/Field.tsx

@@ -19,6 +19,7 @@ function FieldComponent<
     format,
     formatOnBlur,
     initialValue,
+    input,
     isEqual,
     multiple,
     name,
@@ -52,17 +53,22 @@ function FieldComponent<
     value,
   });
 
+  // Merge provided input prop with field.input
+  const mergedField = input
+    ? { ...field, input: { ...field.input, ...input } }
+    : field;
+
   if (typeof children === "function") {
     return (
       children as (
         props: FieldRenderProps<FieldValue, T> & typeof rest,
       ) => React.ReactNode
-    )({ ...field, ...rest });
+    )({ ...mergedField, ...rest });
   }
 
   if (typeof component === "string") {
     // ignore meta, combine input with any other props
-    const inputProps = { ...field.input };
+    const inputProps = { ...mergedField.input };
 
     // Ensure multiple select has array value
     if (
@@ -86,7 +92,7 @@ function FieldComponent<
   }
 
   return renderComponent(
-    { children, component, ...rest, ...field },
+    { children, component, ...rest, ...mergedField },
     {},
     `Field(${name})`,
   );

src/types.ts

@@ -126,6 +126,7 @@ export interface FieldProps<
     Omit<RenderableProps<FieldRenderProps<FieldValue, T>>, "children"> {
   name: string;
   children?: RenderableProps<FieldRenderProps<FieldValue, T>>["children"];
+  input?: Partial<FieldInputProps<FieldValue, T>>; // Allow overriding input props
   [key: string]: any; // Allow additional props for HTML elements
 }
 

typescript/index.d.ts

@@ -125,6 +125,7 @@ export interface FieldProps<
     Omit<RenderableProps<FieldRenderProps<FieldValue, T>>, "children"> {
   name: string;
   children?: RenderableProps<FieldRenderProps<FieldValue, T>>["children"];
+  input?: Partial<FieldInputProps<FieldValue, T>>;
   [key: string]: any;
 }