[5/7] Remove `t` Prop Drilling in EventListCard Modals and Related Logic

[kushu30]

Context

As part of the repository-wide translation compliance cleanup (post #7364), this batch focuses on EventListCard modals and associated logic files that are currently passing t as a prop instead of calling useTranslation() locally.

These components are modal-driven and interconnected, so care must be taken to avoid breaking preview, update, or delete flows.

---

Affected Files

• src/shared-components/EventListCard/Modal/EventListCardModals.tsx
• src/shared-components/EventListCard/Modal/updateLogic.ts
• src/shared-components/EventListCard/Modal/Delete/EventListCardDeleteModal.tsx
• src/shared-components/EventListCard/Modal/Preview/EventListCardPreviewModal.tsx
• src/shared-components/posts/helperFunctions.ts

---

Required Refactor

For each affected file:

• Remove t from props and parameters
• Eliminate t prop drilling chains
• Import useTranslation from react-i18next
• Call const { t } = useTranslation() locally within components
• For non-component utility files, refactor to avoid requiring t as a parameter (move translation responsibility to component level where possible)
• Update related tests and mocks as needed

No functional, modal, or data update behavior should change.

---

Acceptance Criteria

• No component in this batch receives t as a prop
• Utility functions do not require t as a parameter
• All translation calls originate from local useTranslation()
• Modal flows (Preview, Update, Delete) remain fully functional
• Tests pass with no coverage regression
• Translation lint checks pass in CI
• Changes are strictly limited to EventListCard domain