Disable package hoisting

[gitstart-sourcegraph]

Problem statement

We are migrating from yarn to pnpm, the initial setups are done in this branch.
We need to disabling pnpm hoisting by setting hoist=false is recommended on projects using rules_js so that pnpm outside of Bazel lays out a node_modules tree similar to what rules_js lays out under Bazel (without a hidden node_modules/.pnpm/node_modules)

Success criteria

• Lift other dependencies from the root package.json to client workspaces packages
• Disable package hoisting hoist=false in the .npmrc

Time estimate

• Pull requests with ~450 lines changed should take 8 hours at maximum. Ping the reviewer in the spec pull request if time-consuming changes are required.
• Split the work into multiple pull requests if the total diff is bigger than 450 lines of code.

[gitstart-app]

Here is the GitStart Ticket for this issue: https://clients.gitstart.com/sourcegraph/1/tickets/SG-45991