fix: fix serialization issues

[mcollovati]

Description

Fixes serialization issues

Fixes #436
Fixes #437

Type of change

• Bugfix
• Feature

Checklist

• I have read the contribution guide: https://vaadin.com/docs/latest/guide/contributing/overview/
• I have added a description following the guideline.
• The issue is created in the corresponding repository and I have referenced it.
• I have added tests to ensure my change is effective and works as intended.
• New and existing tests are passing locally with my change.
• I have performed self-review and corrected misspellings.

Additional for Feature type of change

• Enhancement / new feature was discussed in a corresponding GitHub issue and Acceptance Criteria were created.

[caalador]

Could we just update mockito to 5.4.0 to get rid of inline as that would have it baked in already?

[mcollovati]

Good point! I'll bump the version

[vaadin-bot]

Hi @mcollovati and @caalador, when i performed cherry-pick to this commit to 11.3, i have encountered the following issue. Can you take a look and pick it manually?
Error Message:
Error: Command failed: git cherry-pick 7475549
error: could not apply 7475549... fix: fix serialization issues (#438)
hint: After resolving the conflicts, mark them with
hint: "git add/rm ", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".

[vaadin-bot]

Hi @mcollovati and @caalador, when i performed cherry-pick to this commit to 14.1, i have encountered the following issue. Can you take a look and pick it manually?
Error Message:
Error: Command failed: git cherry-pick 7475549
error: could not apply 7475549... fix: fix serialization issues (#438)
hint: After resolving the conflicts, mark them with
hint: "git add/rm ", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".