[refactor]: Convert side-effects from useMemo to useEffect in iFramePortal

[deeonwuli]

📌 References

• Issue: Closes https://app.clickup.com/t/869d1mfbp

📝 Implementation

• Replaced useMemo with useEffect + useState in IframeEscapePortal.
• Extract getTopAccessibleWindow() into src/webapp/utils/topAccessibleWindow.ts so the parent-window resolution logic is shared instead of duplicated.
• Added a clarifying comment in useApplyRules.getValueAndVerifyCondition explaining why visibility/disabled/enabled rules evaluate against the form's base period rather than the section's offset period.

🎨 Screenshots

🔥 Notes to the tester

• Check if the validation rules popup is at the bottom right of the current viewable screen and not the entire page in the new data entry app.

#869d1mfbp

[bundlemon]

BundleMon

No change in files bundle size

Groups updated (1)

Status	Path	Size	Limits
✅	Build Folder ./**/*	1.52MB (+27B 0%)	+20%

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[MatiasArriola]

Good refactor, thanks @deeonwuli!

[MiquelAdell]

comes from the analysis here:
#174