Feature request #14068
Composer: Identify if a preset is used to lock a map Item layers
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When the data defined override option is used on a setting, its icon takes another shape.
In Print composer, map Item > Lock layers for map Item (and maybe elsewhere I'm not aware of), it could be nice to have the same behaviour for the preset icon.
This will help to quickly identify if a map has preset locked or not, and, not the least, untill #13418 is fixed, identify map items where this setting is broken