[Cashtab] fix antd syntax issue

Summary: Related to T2680. When clicking on a token from the eTokens list, then 'airdrop to holders,' antd fires an error in the console that reads 'visible will be removed in next major version, please use open instead.' According to the antd changelog for 4.23.0, the prop visible should be replaced with the prop open in: dropdowns, modals, drawers, tables, sliders and tooltip popovers. The visible prop is currently used by several modals throughout the app and is replaced in this diff with the open prop.

Test Plan:
cd web/cashtab && npm start
Navigate to Settings screen and turn on send confirmation modal
using devtools, set screen resolution to mobile, then refresh, navigate back to Settings screen if necessary and turn on Auto-open camera if it is turned off.

Ensure that the following modals will still open:
Airdrop 'Querying the blockchain'
Create eToken image crop
Create eToken confirm eToken settings
Confirm send eToken
Confrim burn eToken
Add saved wallet to contacts list
Add new contact
Confirm delete contact
Rename contact
Rename wallet
Delete Wallet
Send Confirmation
Sign Message
Verify Message

Reviewers: bytesofman, #bitcoin_abc

Reviewed By: bytesofman, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D12060