Legacy Browser Warning Gets a Modern Makeover: Crucial Updates Now Live!

Documentation revamp ensures users are informed of new browser support, enhancing user experience across platforms.

Commit Details:

docs: Update legacy browser warning (#1865) ## Motivation Browser support was added via https://github.com/farcasterxyz/hub-monorepo/issues/573 but this documentation was not updated to reflex those changes ## Change Summary See above ^ ## Merge Checklist _Choose all relevant options below by adding an `x` now or at any time before submitting for review_ - [x] PR title adheres to the [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) standard - [ ] PR has a [changeset](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#35-adding-changesets) - [ ] PR has been tagged with a change label(s) (i.e. documentation, feature, bugfix, or chore) - [ ] PR includes [documentation](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#32-writing-docs) if necessary. - [x] All [commits have been signed](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#22-signing-commits) <!-- start pr-codex --> --- ## PR-Codex overview This PR focuses on updating the README.md file in the hub-nodejs package. It includes changes related to error handling, required packages, and support for both Nodejs and browser environments. ### Detailed summary - Updated support information for Nodejs and browser environments. - Improved error handling with a monadic pattern. - Clarified the required packages for creating new messages. - Encoded fixed length data in byte formats for consistency. > ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}` <!-- end pr-codex -->