[processing] Fix exception when picking extent from layer

Fixes #21456

Author: nyalldawson

python/plugins/processing/gui/ExtentSelectionPanel.py

@@ -69,7 +69,7 @@ def __init__(self, parent=None):
         vl.addWidget(QLabel(self.tr('Use extent from')))
         self.combo = QgsMapLayerComboBox()
         self.combo.setFilters(
-            QgsMapLayerProxyModel.HasGeometry | QgsMapLayerProxyModel.RasterLayer | QgsMapLayerProxyModel.MeshLayer)
+            QgsMapLayerProxyModel.HasGeometry | QgsMapLayerProxyModel.RasterLayer)
         self.combo.setShowCrs(ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF))
         vl.addWidget(self.combo)