Reduce wallet page routing complexity

[josheleonard]

Resolves brave/brave-browser#22402
Resolves brave/brave-browser#22588
Resolves brave/brave-browser#22589

Submitter Checklist:

• I confirm that no security/privacy review is needed, or that I have requested one
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Squashed any review feedback or "fixup" commits before merge, so that history is a record of what happened in the repo, not your PR
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally: npm run test -- brave_browser_tests, npm run test -- brave_unit_tests, npm run lint, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on
• All relevant documentation has been updated, for instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Custom-Headers
  • https://github.com/brave/brave-browser/wiki/Web-Compatibility-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[Douglashdaniel]

Pulled to test locally
Found some bugs that need to be addressed.

• Session Route is not being persisted. (example: While the wallet is locked, enter the route brave://wallet/crypto/accounts, it will redirect you to unlock the wallet. After you unlock the wallet it should direct you to brave://wallet/crypto/accounts not brave://wallet/crypto/portfolio

• Add account button is not working on the Asset Detail page.

• While the wallet is unlocked go to brave://wallet/crypto/portfolio/braveisawesome, if the token doesn't exist it should redirect back to brave://wallet/crypto/portfolio/ which it looks like it's trying to do, but /braveisawesome stays persisted and the Nav bar disappears.

• Restore button isn't working on the brave://wallet/crypto/unlock page

• Restore button isn't working on the brave://wallet/crypto/onboarding page

• After creating a password for a new wallet it shows the backup-wallet page but the route should be brave://wallet/crypto/backup-wallet

• After creating a wallet the skip button isn't working on the backup-wallet page

• After creating a wallet the recovery phrase is empty on the next step.

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[josheleonard]

Pulled to test locally Found some bugs that need to be addressed.

• Session Route is not being persisted. (example: While the wallet is locked, enter the route brave://wallet/crypto/accounts, it will redirect you to unlock the wallet. After you unlock the wallet it should direct you to brave://wallet/crypto/accounts not brave://wallet/crypto/portfolio
• Add account button is not working on the Asset Detail page.
• While the wallet is unlocked go to brave://wallet/crypto/portfolio/braveisawesome, if the token doesn't exist it should redirect back to brave://wallet/crypto/portfolio/ which it looks like it's trying to do, but /braveisawesome stays persisted and the Nav bar disappears.
• Restore button isn't working on the brave://wallet/crypto/unlock page
• Restore button isn't working on the brave://wallet/crypto/onboarding page
• After creating a password for a new wallet it shows the backup-wallet page but the route should be brave://wallet/crypto/backup-wallet
• After creating a wallet the skip button isn't working on the backup-wallet page
• After creating a wallet the recovery phrase is empty on the next step.

Fixed in commit: c27cddd

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[Douglashdaniel]

LGTM!

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push

[brave-builds]

A Storybook has been deployed to preview UI for the latest push