Introduce methods to construct URLs to the wallet without instant redirect

[denbite]

Pre-flight checklist

• I have read the Contributing Guidelines on pull requests.
• Commit messages follow the conventional commits spec
• If this is a code change: I have written unit tests.
• If this changes code in a published package: I have run pnpm changeset to create a changeset JSON document appropriate for this change.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

Some use cases certainly require not redirecting instantly to the Wallet page

The following methods were added to the WalletConnection class that construct URL without calling window.assign afterward:

• requestSignInUrl
• requestSignTransactionsUrl

Test Plan

Related issues/PRs

Deprecated PR -> #1025
Issue -> #1010

[changeset-bot]

🦋 Changeset detected

Latest commit: b78a324

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

This PR includes changesets to release 3 packages

Name	Type
@near-js/wallet-account	Minor
near-api-js	Patch
@near-js/cookbook	Patch

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[vikinatora]

lgtm, I'd just want the changeset to be changed from patch to minor in order to conform to semver. After that we can merge

[denbite]

lgtm, I'd just want the changeset to be changed from patch to minor in order to conform to semver. After that we can merge

done