fix: remove modal component on route refresh

[mcollovati]

Description

Modal components attached to the UI were not removed or replaced during self-navigation triggered by a route refresh.
This change updates navigation handler to ensure modal components are removed and adds a new navigation trigger for route refresh to differentiate programmatic navigations (e.g., forward actions).
It also modifies Hotswapper to require a full chain refresh when modal components are present.

Fixes #20473

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.

[github-actions]

Test Results

1 158 files  ± 0  1 158 suites  ±0   1h 33m 8s ⏱️ - 1m 37s
7 516 tests + 3  7 463 ✅ + 4  53 💤 ±0  0 ❌ ±0 
7 884 runs  +23  7 821 ✅ +24  63 💤 ±0  0 ❌ ±0 

Results for commit 2d0834e. ± Comparison against base commit 9e72f92.

♻️ This comment has been updated with latest results.

[sonarqubecloud]

Quality Gate passed

Issues
85 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[netsrotr]

We have tested Vaadin 24.5.7 and this fix cause issues on our side with our hotswap -it close opened modal dialogs randomly and influence the browser refresh behavior (e.g. via key F5 in chrome).
It would really help if you would provide any documentation how to setup a working hotswap environment (favor eclipse IDE, but IntelliJ would also fit), where your fix really work. For now we stoped using hotswap because of that, any older version 24.5.x before was better than that, sorry.

[mcollovati]

@netsrotr do you mind creating a new ticket, providing a code example (or even better, a sample project) showing how you are using dialogs in the application? This would help us investigate further and see if we missed some use cases.