Fix MintSupplyTab Amount form field error (#5191)

## Problem solved

Short description of the bug fixed or feature added

<!-- start pr-codex -->

---

## PR-Codex overview
This PR updates the validation and input handling for the minting amount in the `MintSupplyTab` component. It ensures that the amount is coerced to a number type and specifies the input type for better user experience.

### Detailed summary
- Changed `amount` validation from `z.number()` to `z.coerce.number()` to ensure the input is coerced to a number.
- Updated the `Input` component to include `type="number"` for the amount field, enhancing user input handling.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

<!-- end pr-codex -->

Author: MananTank

apps/dashboard/src/app/(dashboard)/(chain)/[chain_id]/[contractAddress]/nfts/[tokenId]/components/mint-supply-tab.tsx

@@ -29,7 +29,7 @@ const mintAdditionalSupplyFormSchema = z.object({
   to: z.string().refine((value) => isAddress(value), {
     message: "Invalid Ethereum address",
   }),
-  amount: z.number().int().min(1, "Amount must be at least 1"),
+  amount: z.coerce.number().int().min(1, "Amount must be at least 1"),
 });
 
 const MintSupplyTab: React.FC<MintSupplyTabProps> = ({ contract, tokenId }) => {
@@ -96,7 +96,7 @@ const MintSupplyTab: React.FC<MintSupplyTabProps> = ({ contract, tokenId }) => {
             <FormItem>
               <FormLabel>Amount</FormLabel>
               <FormControl>
-                <Input {...field} />
+                <Input {...field} type="number" />
               </FormControl>
               <FormDescription>
                 How many would you like to mint?