Fix manual move

[MohamedElgammal]

Description

This PR is a follow-up on PR #2804 to fix a segmentation fault that happens during manual moves after the latest refactors. It also adds an widget for the layer in the manual move prompt.

Related Issue

The manual move was facing segmentation fault due to 2 reasons:

1. The global instance of BlkLocRegistry was used instead the one stored in placer_state_ --> fixed in PR Fix segmentation fault when moving blocks manually #2804 but still after this fix, whenever the user accepts or rejects the move, it will result in a seg fault.
2. After the move, the code is trying to update the RL agent Q table and the move statistics while the move type is manual (not recognized by the agent) --> fixed in this PR

Types of changes

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)