[MM-68968] Guard redirects and subframe navigations alongside will-navigate (#3927)

[devinbinnie]

Cherry-pick of #3927 to release-6.2

NONE

Change Impact: 🟡 Medium

Regression Risk: Navigation behavior changes across multiple web contents and popup modules. Automated tests cover main-frame and subframe redirects, which limits regression risk.

QA Recommendation: Skip manual QA. Automated coverage is sufficient for this isolated navigation change.

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/app/views/pluginsPopUps.ts`:
- Line 65: Replace the will-frame-navigate handler registration in the plugin
popup setup with popup-specific logic that resolves the originating server for
parentId, allows subframe URLs only when their origin matches that server, and
blocks while logging all other URLs. Update the corresponding plugin popup test
to assert that an HTTPS URL from a different origin is rejected.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0a68dc4 and 13ddc05.

📒 Files selected for processing (8)

• src/app/callsWidgetWindow.test.js
• src/app/callsWidgetWindow.ts
• src/app/views/pluginsPopUps.test.js
• src/app/views/pluginsPopUps.ts
• src/app/views/webContentEvents.test.js
• src/app/views/webContentEvents.ts
• src/app/views/webContentEventsCommon.test.ts
• src/app/views/webContentEventsCommon.ts