Description:
Add the ability to edit/rename wallet accounts via context menu, extending the existing test_wallet_accounts_basic.py.

Background:
The desktop Squish test test_add_edit_restart_add_delete_generated_account.py includes account renaming. Currently our Appium coverage only handles add/delete (41% coverage). This brings us closer to parity.

Deliverables:

• Add ACCOUNT_MENU_EDIT locator to locators/wallet/accounts_locators.py
• Add edit_account_via_menu(new_name, index) method to pages/wallet/wallet_left_panel.py
• Add test steps to verify rename in test_wallet_accounts_basic.py

Acceptance Criteria:

• Can rename account via context menu → Edit action
• Renamed account appears in account list
• Test passes on BrowserStack Android

References:

• Desktop test: test/e2e/tests/crtitical_tests_prs/test_add_edit_restart_add_delete_generated_account.py
• Coverage matrix feature 9-10