[MNY-250] Fix Save button not enabled after changing Royalty BPS in contract settings page (#8252)

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## PR-Codex overview
This PR introduces a modification to the form handling in two components, adding the `shouldDirty` option to the `setValue` function calls for better form state management.

### Detailed summary
- In `royalties.tsx`, added `shouldDirty: true` to `form.setValue` for `seller_fee_basis_points`.
- In `platform-fees.tsx`, added `shouldDirty: true` to `form.setValue` for `platform_fee_basis_points`.

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<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

* **Bug Fixes**
  * Platform Fees and Royalties settings now mark field edits as dirty immediately, enabling the Save action when values are changed.
  * Unsaved-changes indicators and prompts update right away, reducing the risk of losing edits.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: MananTank

apps/dashboard/src/app/(app)/(dashboard)/(chain)/[chain_id]/[contractAddress]/settings/components/platform-fees.tsx

@@ -137,6 +137,7 @@ export function SettingsPlatformFees({
                           onChange={(value) =>
                             form.setValue("platform_fee_basis_points", value, {
                               shouldValidate: true,
+                              shouldDirty: true,
                             })
                           }
                           value={form.watch("platform_fee_basis_points")}

apps/dashboard/src/app/(app)/(dashboard)/(chain)/[chain_id]/[contractAddress]/settings/components/royalties.tsx

@@ -151,6 +151,7 @@ export function SettingsRoyalties({
                           onChange={(value) =>
                             form.setValue("seller_fee_basis_points", value, {
                               shouldValidate: true,
+                              shouldDirty: true,
                             })
                           }
                           value={form.watch("seller_fee_basis_points")}