feat: Update to be Stacks.js v7 compatible

[janniks]

This PR was published to npm with the alpha versions:

• connect npm install @stacks/connect@7.7.2-alpha.cc06270.0 --save-exact
• connect-react npm install @stacks/connect-react@22.4.3-alpha.cc06270.0 --save-exact
• connect-ui npm install @stacks/connect-ui@6.4.2-alpha.cc06270.0 --save-exact

• update to use both legacy and next network
• update post conditions and clarity serialization
• switch to npm from yarn

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: cc06270e7f69a6b20b792c8643fea91d87e7d93c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

| Name | Type | | --------------------- | ----- | | @stacks/connect-react | Minor | | @stacks/connect-ui | Minor | | @stacks/connect | Minor |

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[janniks]

Had a weird yarn problem for a while, where we could never recreate the lock file. It was hard to update deps. And npm is the default and everyone has it, one step less 😉

Yep, I think the actual web bundle won't be too much bigger, as it only uses a few imports. But for now we want backwards comp. A next version of Connect would reinvent a bunch of stuff and be non-backwards compatible (while the wallet still are probably), but hopefully more on that front soon!

[beguene]

@janniks makes sense !

I just wanted to know, as I rarely use yarn nowadays, it's either pnpm or npm. npm is quite fast now, and it's much simpler and predictable.