[frontend] In Investigation, fix the display of a relationship after it has been created (#9022)

[Gwendoline-FAVRE-FELIX]

Proposed changes

• In an investigation, display the newly created relationship between two nodes, without needing to refresh the page.

Related issues

• https://github.com/OpenCTI-Platform/opencti/issues/9022

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 64.68%. Comparing base (5087c95) to head (09120d6). Report is 8 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #9077 +/- ## ======================================= Coverage 64.68% 64.68% ======================================= Files 620 620 Lines 59208 59208 Branches 6521 6523 +2 ======================================= Hits 38301 38301 Misses 20907 20907 ```

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