Middle click on pinned tab causes all opened tabs to show as pinned tabs

[srirambv]

Test plan

See #9528 (comment)

Original issue description

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  Cloning a pinned tab and then middle click on it causes the cloned tab to get pinned but with close button

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Windows 10 x64

• Brave Version (revision SHA):
  Brave 0.17.3
  rev 02a7878
  Muon 4.0.3

• Steps to reproduce:

  1. Open 3-4 tabs and visit pages in them and pin them
  2. Right click on the 2nd pinned tab and click on clone, ensure the cloned tab is opened
  3. Middle click/Mouse wheel click on any pinned tab, cloned tab gets pinned but shows close button on it. Switching to it causes it to go back to being normal tab

• Actual result:
  Cloning a pinned tab and then middle click on it causes the cloned tab to get pinned but with close button

• Expected result:
  Cloned tab should remain normal and not become a pinned tab

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  Yes

• Is this an issue in the currently released version?
  No, verified on 0.16.9 doesn't happen. Introduced from 0.17.1 onwards

• Can this issue be consistently reproduced?
  Yes

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:
  No console errors
  

• Any related issues:
  cc: @NejcZdovc @bsclifton @cezaraugusto

[srirambv]

This happens on all normal tabs not just the cloned tabs. Mouse hover restore backs the tab to normal state

[cezaraugusto]

• Normal tabs goes to extraSmall breakpoint rather than getting pinned. That explains close button and normal state after hover (component update)
• confirmed Sri last comment it happens to all tabs rather than only cloned tabs

Chrome, Safari, and FF all close pinned tabs with middle click. Opera does nothing.

Given closing a pinned tab is a matter for another issue, I'm going to cancel middle click over pinned tabs until #4063 is fixed.