fix(accounts): hide the account secondary label when it duplicates the primary [PERA-4523]

[yasin-ce]

Description

• Hides the account secondary label wherever it would just repeat the primary (e.g. a custom name identical to the NFD, or a name that is the account's own address) — fixes the account name rendering twice in the Swap header.
• The dedupe rule lives in shared/package utils (dedupeSecondaryLabel, getAccountDisplayName) so every call site behaves the same; AccountDisplay's label derivation is extracted into a colocated useAccountDisplay hook.
• Centralizes the short/long address truncation lengths into canonical constants in @perawallet/wallet-core-shared.

Related Issues

• Closes https://algorandfoundation.atlassian.net/browse/PERA-4523

Checklist

• Have you tested your changes locally?
• Have you reviewed the code for any potential issues?
• Have you documented any necessary changes in the project's documentation?
• Have you added any necessary tests for your changes?
• Have you updated any relevant dependencies?

Additional Notes

• The address-name suppression in getAccountDisplayName applies wallet-wide (any account whose name equals its own address now renders as a single truncated address everywhere), not just on the touched screens.