Suggest wigets should react to mode changes.

[dbaeumer]

To reproduce:

• open a first json file
• quickly request code complete (best done programmatically by executing the code complete command )

this.keybindingService.executeCommand('editor.action.triggerSuggest');

Observe: the suggest widget is empty. The reason is that the json support now comes in through an extension that the json mode dynamically gets the suggest support. Since json starts a server this can take a while.

[joaomoreno]

The fix should happen in the promise chain from the suggest contribution through the mode to the extension.

[jrieken]

related to #6057