Fix infinite OpenInTorWindow looping when auto redirect through navigation throttle.

[darkdh]

Also change window disposition to SWITCH_TO_TAB to avoid redundant new
tab.
We no longer close the original tab to avoid confusion and lots of users complained about this behavior.

The crash cause is calling chrome::FindTabbedBrowser with match_original_profiles equals true so OnionLocationNavigationThrottle::WillStartRequest got triggered endlessly.

Resolves brave/brave-browser#13736

Submitter Checklist:

• There is a ticket for my issue.
• Used Github auto-closing keywords in the commit message.
• Wrote a good PR/commit description
• 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).
• Requested a security/privacy review as needed.

Reviewer Checklist:

• 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:

Crash

brave/brave-browser#13736 (comment)

Window disposition and original tab

1. Clean profile
2. Turn on Automatically redirect .onion sites in brave://settings/extensions
3. In normal window open: brave.com
4. There will be only one tab opened which is ttps://brave5t5rjjg3s6k.onion and no new tab in Tor window
5. The original tab in normal window won't be closed
6. In normal window open: https://www.torproject.org/
7. The second tab http://expyuzz4wqqyqhjn.onion/index.html will be opened in Tor window
8. Repeat step 3 and step 6
9. There will still be two tabs, https://brave5t5rjjg3s6k.onion and http://expyuzz4wqqyqhjn.onion/index.html

[darkdh]

unrelated signing error on Windows
https://ci.brave.com/job/pr-brave-browser-auto-tor-redirect-crash-windows/3/execution/node/227/log/

[stephendonner]

Verified FIXED using the testplan from #7713 (comment) on

Brave	1.22.43 Chromium: 89.0.4389.58 (Official Build) nightly (x86_64)
Revision	1a139f28ecc27719439e37c6b1533cee999cb802-refs/branch-heads/4389@{#1134}
OS	macOS Version 11.2.1 (Build 20D74)

Brave	1.22.43 Chromium: 89.0.4389.58 (Official Build) nightly (64-bit)
Revision	1a139f28ecc27719439e37c6b1533cee999cb802-refs/branch-heads/4389@{#1134}
OS	Windows 10 OS Version 2009 (Build 21318.1000)

1. Clean profile
2. Enabled Automatically redirect .onion sites in brave://settings/extensions
3. In normal window opened: brave.com
4. Verified only one tab opened which is https://brave5t5rjjg3s6k.onion and no new tab in a Tor window

5. The original tab in normal window wasn't closed
6. In a new normal window, I opened: https://www.torproject.org/
7. The second tab http://expyuzz4wqqyqhjn.onion/index.html was opened in a Tor window

8. Repeated step 3 and step 6
9. Confirmed there were still only two Tor tabs, https://brave5t5rjjg3s6k.onion and http://expyuzz4wqqyqhjn.onion/index.html