InvalidPathException when clicking "Open file" due to a special filename

[cserpell@…]

What steps will reproduce the problem?

1. Open load dialog.
2. Change directory.

What is the expected result?

Continue looking for files changing the directory.

What happens instead?

It opens bug report dialog.

Please provide any additional information below. Attach a screenshot if possible.

Version 18513

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2022-07-07 23:02:39 +0200 (Thu, 07 Jul 2022)
Revision:18513
Build-Date:2022-07-08 01:30:57
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18513 en) Linux Ubuntu 22.04 LTS
Memory Usage: 1356 MB / 3842 MB (187 MB allocated, but free)
Java version: 11.0.15+10-Ubuntu-0ubuntu0.20.04.1, Private Build, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1920×1080 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: en_US.UTF-8
System property file.encoding: ANSI_X3.4-1968
System property sun.jnu.encoding: ANSI_X3.4-1968
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: ubuntu:GNOME
VM arguments: [-Duser.home=${HOME}]
Dataset consistency test: No problems found

Plugins:
+ FastDraw (35978)
+ ImproveOsm (215)
+ KartaView (387)
+ Mapillary (2.0.0-beta.14)
+ apache-commons (35924)
+ apache-http (35924)
+ jna (35924)
+ utilsplugin2 (36001)

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
+ https://raw.githubusercontent.com/species/josm-preset-traffic_sign_direction/master/direction.mapcss

Last errors/warnings:
- 00030.332 E: Failed to locate image 'preference.png'
- 01346.072 E: Handled by bug report queue: java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: /home/<user.name>/Downloads/Cristi��n Serpell.pdf



=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: Basic L&F File Loading Thread (1249)
java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: /home/cserpell/Downloads/Cristi��n Serpell.pdf
	at java.base/sun.nio.fs.UnixPath.encode(UnixPath.java:145)
	at java.base/sun.nio.fs.UnixPath.<init>(UnixPath.java:69)
	at java.base/sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:279)
	at java.base/java.nio.file.Path.of(Path.java:147)
	at java.base/java.nio.file.Paths.get(Paths.java:69)
	at java.desktop/sun.awt.shell.ShellFolder.getShellFolder(ShellFolder.java:247)
	at java.desktop/javax.swing.filechooser.FileSystemView.getFiles(FileSystemView.java:523)
	at java.desktop/javax.swing.plaf.basic.BasicDirectoryModel$FilesLoader.run0(BasicDirectoryModel.java:300)
	at java.desktop/javax.swing.plaf.basic.BasicDirectoryModel$FilesLoader.run(BasicDirectoryModel.java:289)
	at java.base/java.lang.Thread.run(Thread.java:829)

[taylor.smock]

Closed as duplicate of #14596.