Minor checks

[microstudi]

Fixes some situations where the user tries to authorize without previous permissions:

• [x] Trying to authorize with viaoberta when no valid authorization is present (should redirect back with error)
• [x] Access to the new authorization when is already granted
• [x] Improve the email receveid when valid auth granted

[codecov-commenter]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (1b156be) 96.16% compared to head (b39bc97) 96.38%.

:exclamation: Current head b39bc97 differs from pull request most recent head 43cbdda. Consider uploading reports for the commit 43cbdda to get more accurate results

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #13 +/- ## ========================================== + Coverage 96.16% 96.38% +0.21% ========================================== Files 21 22 +1 Lines 417 442 +25 ========================================== + Hits 401 426 +25 Misses 16 16 ``` | [Files](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [...cidim/trusted\_ids/check\_existing\_authorizations.rb](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YXBwL2NvbnRyb2xsZXJzL2NvbmNlcm5zL2RlY2lkaW0vdHJ1c3RlZF9pZHMvY2hlY2tfZXhpc3RpbmdfYXV0aG9yaXphdGlvbnMucmI=) | `100.00% <100.00%> (ø)` | | | [.../decidim/trusted\_ids/needs\_trusted\_ids\_snippets.rb](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YXBwL2NvbnRyb2xsZXJzL2NvbmNlcm5zL2RlY2lkaW0vdHJ1c3RlZF9pZHMvbmVlZHNfdHJ1c3RlZF9pZHNfc25pcHBldHMucmI=) | `100.00% <ø> (ø)` | | | [.../trusted\_ids/verifications/invalid\_notification.rb](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YXBwL2V2ZW50cy9kZWNpZGltL3RydXN0ZWRfaWRzL3ZlcmlmaWNhdGlvbnMvaW52YWxpZF9ub3RpZmljYXRpb24ucmI=) | `100.00% <100.00%> (ø)` | | | [.../trusted\_ids/verifications/success\_notification.rb](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YXBwL2V2ZW50cy9kZWNpZGltL3RydXN0ZWRfaWRzL3ZlcmlmaWNhdGlvbnMvc3VjY2Vzc19ub3RpZmljYXRpb24ucmI=) | `100.00% <100.00%> (ø)` | | | [lib/decidim/trusted\_ids/engine.rb](https://app.codecov.io/gh/ConsorciAOC-PRJ/decidim-module-trusted-ids/pull/13?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-bGliL2RlY2lkaW0vdHJ1c3RlZF9pZHMvZW5naW5lLnJi) | `100.00% <100.00%> (ø)` | |

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