GUI: Only default icons in grid view

[chkr-private]

Only default icons are shown in the grid view.

How to reproduce:

• have on old ~/.scummvmrc which does not yet have "enginedid=..." set for the games
• update to scummvm 2.7.0
• got to "Global Option", "GUI"
• "Update Icons"
• in game chooser, switch to grid view

Current result:

• only default tiles/icons are shown

Expected result:

• correct icons

Workaround:

• select a game
• use the gear icon to edit the entry
• no changes, just press "OK" to save
• now the correct game icon is displayed

Comment:

• I checked the difference between my original ~/.scummvmrc file and the one after I applied the workaround for a game and it turns out that in my old .scummvmrc none of the games had an "engineid=" set.
• To avoid the need to update each game individually, probably the engineid could be set fully automatically when starting scummvm.

[sev-]

Unfortunately, this is not possible. We were thinking about it in the past, but it is technically barely possible to upgrade.

So, after launching each game, you will have the icons fixed.

Alternatively, you may launch Mass Add on an empty scummvm.ini.