[Form]: theme switch failure during row editing

[NatalliaAlieva]

Description

There is an issue where the theme doesn't switch correctly when a user attempts to edit a row and selects a different theme.

Steps to Reproduce

1. Open Demo->Form.
2. Edit any row.
3. Switch to other theme.

Actual result

The theme doesn't switch as expected.

Screen.Recording.2024-10-22.at.13.42.03.mov

Expected result

When editing rows a modal warning about unsaved changes ("Your data may be lost. Do you want to save data?") should appear and remain visible long enough for the user to make a decision. After interacting with this modal, whether choosing to save or discard changes, the theme should then switch seamlessly according to the user's selection.

Environment

• UUI version: 5.10.1
• Browser name: any
• Operating System: any