POS UI Extensions: update modal API api.smartGrid.presentModal() → api.action.presentModal()

[mohab-sameh]

Renamed API in the unified action namespace. (Shopify)

Before

api.smartGrid.presentModal()

After

api.action.presentModal()

Detect:

• .smartGrid.presentModal() usage anywhere; replace with .action.presentModal().

Edge cases:

• Ensure surrounding imports already migrated to the new packages (see issue Hydrogen 2025.05: run RR7 codemod (Remix → React Router 7) and enable future flags #5).

Reference:

• POS UI Extensions “Code changes” snippet shows presentModal move to api.action:

  https://shopify.dev/docs/api/pos-ui-extensions/latest/migrating#code-changes (Shopify)