The change adds an additional field to `ExpressionUpdates` messages sent by `ProgramExecutionSupport` to indicate if the type of value (or its method pointer) has changed and therefore would potentially require a suggestions' update.

Prior to #3729 that check was done during the instrumentation. However we still want to continue to support "pending expression" functionality therefore `SuggestionsHandler` will use the additional information to filter only the required expression updates.

Most of the changes are related to adapting our tests to the new field.

Closes #6706.

# Important Notes
The associated project now loads and navigates smoothly.
Also attaching a screenshot from the project that illustrates that pending functionality continues to work:
[Kazam_screencast_00006.webm](https://github.com/enso-org/enso/assets/292128/35918841-f84f-4e1c-b1b0-40e45d97e111)