Beacon revert get active account

[hui-an-yang]

[breaking change] removing public property account on class BeaconWallet
@taquito/beacon-wallet - revert the use of subscribe to ACTIVE_ACCOUNT_SET in the package to ensure users will get a warning in the console if they didn't subscribe themselves.
@taquito/beacon-wallet - added broadcast-channel mock for @airgap/beacon-transport-postmessage in unit test
internal dependencies update closes #3039 #3059 #3060 #3061 #3063

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New packages have been deployed to the preview repository at https://npm.preview.tezostaquito.io/.

Published packages:

npm i @taquito/rpc@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/sapling@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/beacon-wallet@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/contracts-library@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/remote-signer@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/tzip12@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/local-forging@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/signer@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/utils@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/taquito@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/timelock@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/core@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/http-utils@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/michelson-encoder@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/ledger-signer@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/michel-codec@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/
npm i @taquito/tzip16@20.1.0-06c8356-- --registry https://npm.preview.tezostaquito.io/

[roxaneletourneau]

Looks good to me, but see the note about breaking change.