Browser is responsive when anonize2 crypto operations run

[mrose17]

Test Plan

• run the usual ledger tests to see if a wallet is created, a contribution is made, etc.

Description

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Fixes #7344

[bsclifton]

Works great!

At first, I was noticing weird logs with "hello worker". After doing rm -rf node_modules && npm install, the new ledger-client library was gotten and it still worked minus the logs 😄

[bsclifton]

@alexwykoff do you think there is enough info here in the original post to test?

[cezaraugusto]

++

[bsclifton]

reverted