Remove key from Canvas component

[mlqn]

Description

Remove key from Canvas component to prevent rerendering of the BPMN editor

Related Issue(s)

• 12969

Verification

• [x] Your code builds clean without any errors or warnings
• [x] Manual testing done (required)

[codecov[bot]]

Codecov Report

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

Project coverage is 91.46%. Comparing base (396c405) to head (e7004c8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #12983 +/- ## ======================================= Coverage 91.46% 91.46% ======================================= Files 1400 1400 Lines 19821 19821 Branches 2395 2395 ======================================= Hits 18130 18130 Misses 1427 1427 Partials 264 264 ```

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