Filling the Raster attribute tables tab with buttons should not be systematic in Layer Styling panel

[DelazJ]

What is the bug or the crash?

1. Add a raster layer to QGIS (e.g. alaska_nad here)

2. Go to the layer styling panel and enable the Raster Attribute Tables (RAT) tab

3. If no attributes are associated to the layer, you will get the following message:

   The raster layer has no associated attribute tables, you can create a new attribute table or load one from a VAT.DBF file.

4. Pressing either OK or the close x button at the top of the dialog doesn't matter: you get a tab filled with buttons to create a RAT. This can be puzzling when you have no idea what this is (and there is no way to clear the dialog) and, you may just not have the need for adding a raster attribute table, or you just click that tab by curiosity or error.

IMHO this message box should at least provide way to Cancel the RAT creation operation and not fill the tab with unnecessary buttons. (Or maybe the above message should be shown there in the tab and the buttons would be displayed?).

Steps to reproduce the issue

Enregistrement.de.l.ecran.2023-12-04.a.15.31.39.mov

Versions

QGIS version	3.34.1-Prizren	QGIS code revision	1339274
Qt version	5.15.2
Python version	3.9.5
GDAL/OGR version	3.3.2
PROJ version	8.1.1
EPSG Registry database version	v10.028 (2021-07-07)
GEOS version	3.9.1-CAPI-1.14.2
SQLite version	3.35.2
PDAL version	2.3.0
PostgreSQL client version	unknown
SpatiaLite version	5.0.1
QWT version	6.1.6
QScintilla2 version	2.11.5
OS version	macOS 13.6
Active Python plugins
changeDataSource	3.1
qtribu	0.14.2
bdtopo_importer	0.2
MemoryLayerSaver	4.0.4
MapsPrinter	0.9
lizmap	3.8.3
StreetView	3.2
processing	2.12.99
db_manager	0.1.20
MetaSearch	0.3.6

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[alexbruy]

Fixed in master