fix layouting issues with collab

[loreanvictor]

Checklist

• I documented the TypeScript code using JSDoc style.

Motivation and Context

Importing patches can sometimes lead to broken layouts: for example when a relationship is updated, its path might have been set due to a different context (state) than what is present on local machine (perhaps due to concurrent changes), resulting in broken relationships.

Description

This PR fixes the aforementioned issues by running layouter after importing patches. This used to be the flow, but due to layouter instability and locking certain actions (e.g. resizing), was disabled for a while. The layouter is now executed with a debounce, to mitigate its inherent instability and provide a smoother user experience.

Steps for Testing

1. Run two Apollon instances using Apollon_standalone.
2. Try to make changes at the same time and break the layouts.

They layouts should typically fix themselves. Using subscribeToAllModelChangePatches() method helps with finding corner cases more easily.

Test Coverage

File	Branch	Line
services/patcher/patcher-saga.ts	76.92%	91.48%