ExcludeFromRunAll setting prevents cell being executed

[degrammer]

If this setting is enabled, it prevents the cell being executed.

The problem resides at the controller executeHandler function, it seems the logic is not taking into account the context of the execution (Run all vs Run specific cell) since the same execution context is bound to that function, see more at https://github.com/stateful/vscode-runme/blob/main/src/extension/kernel.ts#L489