Name column always shows alias instead of field name in refactor fields algorithm

[mblesius]

What is the bug or the crash?

The name column in the field mapping of the Refactor fields algorithm will always show the alias of a field. To the user it appears as if it is not possible to rename fields for which an alias has been set, but the renaming of the field is performed anyway.

Steps to reproduce the issue

1. Add a vector layer with at least one column to a new QGIS project
2. Set an alias for a field
3. Open Refactor fields algorithm
4. Try to change the name of the field for which the alias has been set

refactor_fields_with_alias.mp4

Versions

QGIS version	3.30.2-'s-Hertogenbosch	QGIS code revision	0992b53
Qt version	5.15.3
Python version	3.9.5
GDAL/OGR version	3.6.4
PROJ version	9.2.0
EPSG Registry database version	v10.082 (2023-02-06)
GEOS version	3.11.2-CAPI-1.17.2
SQLite version	3.41.1
PDAL version	2.5.2
PostgreSQL client version	unknown
SpatiaLite version	5.0.1
QWT version	6.1.6
QScintilla2 version	2.13.1
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

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

Also tested with QGIS 3.31.0-Master regarding #52782

[alexbruy]

Not specific to Processing, happens in other places as well.