Add Ledger Known Issues and Solution

[gagdiez]

Description

Using Ledger with bundler results in some simple-to-fix issues. I have added the issues to the main README.md for high visibility, as well as the proposed solution.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• [x ] I have made corresponding changes to the documentation
• My changes generate no new warnings

Type of change.

• FIX - a PR of this type patches a bug.
• FEATURE - a PR of this type introduces a new feature.
• BUILD - a PR of this type introduces build changes.
• CI - a PR of this type introduces CI changes.
• DOCS - a PR of this type introduces DOCS improvement.
• STYLE - a PR of this type introduces style changes.
• REFACTOR - a PR of this type introduces refactoring.
• PERFORMANCE - a PR of this type introduces performance changes.
• TEST - a PR of this type adds more tests.
• CHORE - a PR introduces other changes than the specified above.

[kujtimprenkuSQA]

Hey, @gagdiez thank you for submitting this PR.

I think this issue is related only to the ledger package when a dApp uses parcel for bundling it would be better to add the Known Issue there, we've already done it on dev branch.

PR: #413
Dev Branch (ledger readme): https://github.com/near/wallet-selector/tree/dev/packages/ledger#known-issues

Could you please follow the contribution guideline here, we do not push to main unless it's for a release:
https://github.com/near/wallet-selector/blob/main/CONTRIBUTING.md#branching