feat(qr-login): add additional QRCodeGrantLoginError enum values

[hughns]

On top of #6178

This adds additional QRCodeGrantLoginError enum values in the SDK crate and additional HumanQrGrantLoginError enum values in the FFI crate.

Most of the new values are assigned from what previous went to Unknown enum values.

The is one bugfix for where ::DeviceIDAlreadyInUse was erroneously being returned when the actually the device was not returned by the homeserver. This is now mapped to ::DeviceNotFound values.

• Public API changes documented in changelogs (optional)

Signed-off-by:

[codspeed-hq]

Merging this PR will not alter performance

✅ 50 untouched benchmarks

---

_{Comparing hughns:hughns/qr-code-grant-login-errors (180a694) with main (3c13b3e)}

[codecov]

Codecov Report

❌ Patch coverage is 96.63963% with 29 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.89%. Comparing base (3c13b3e) to head (180a694).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...atrix-sdk/src/authentication/oauth/qrcode/grant.rs	96.74%	18 Missing and 10 partials ⚠️
.../matrix-sdk/src/authentication/oauth/qrcode/mod.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6141      +/-   ##
==========================================
+ Coverage   89.84%   89.89%   +0.04%     
==========================================
  Files         365      365              
  Lines      100750   101567     +817     
  Branches   100750   101567     +817     
==========================================
+ Hits        90521    91305     +784     
- Misses       6692     6714      +22     
- Partials     3537     3548      +11     

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