* add optional layer rendering to 3D terrain
* remove terrainLayers from Qgs3DMapSettings
* fix tests
* switch to layer terrain rendering when no 3d renderer is set
* fix mesh tests to handle terrain being disabled
The previous approach was severely broken, because the default
CRS for new projects setting was ignored as soon as a layer
was added to the project.
Instead, refine the setting to add options
- "Use CRS from first layer added": same as previous behavior,
the project CRS is set to match the first layer added to a new
project
- "Use a default CRS": CRS for a new project is set to a preset
default CRS, and is left unchanged when adding layers to the
project
Also update qgis_global_settings.ini to reflect these changes.
Fixes#27516
arrows allow browsing the feature list in the attribute table in form view
the current edited feature can be highlighted and the map canvas automatically panned or zoomed
instead of QgsAttributeForm - because it's used on places not including QgsAttributeForm
now it's able to use @form_mode in expressions of containers and QML widgets
