Reshape Features tool doesn't preserve curves

[bencahill]

What is the bug or the crash?

When the "Reshape Feature" tool is used to modify a feature, curves are segmentized, even when the layer supports curved features.

Steps to reproduce the issue

1. Create temporary or gpkg layer with a geometry that supports curves (CompoundCurve, MultiCurve, CurvePolygon or MultiSurface)
2. Add feature containing curve

3. Edit feature using "Reshape Features" tool
4. Curve in feature geometry is automatically segmentized

Edit 1:

Edit 2:

Versions

QGIS version	3.40.2-Bratislava
QGIS code revision	14826ca1
Libraries
Qt version	5.15.13
Python version	3.12.8
GDAL/OGR version	3.9.3
PROJ version	9.5.0
EPSG Registry database version	v11.016 (2024-08-31)
GEOS version	3.13.0-CAPI-1.19.0
SQLite version	3.46.1
PDAL version	2.8.1
PostgreSQL client version	16.2
SpatiaLite version	5.1.0
QWT version	6.3.0
QScintilla2 version	2.14.1
OS version	Windows 10 Version 2009
Active Python plugins
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.6
processing	2.12.99

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