[Win32] Some icons are missing

[HeikoKlare]

Describe the bug
I found one place (maybe there are more) where an icon is missing. The tooltip when hovering over warnings does not show the warning symbol anymore.
It's a regression from:

• [Win32] Avoid disposed image usage in GC operations #2331
• Track and dispose resources created by operations in GC #2328

The logs indicate that it's not related to the image itself but to a problem with the label using it:

java.lang.NullPointerException: Cannot invoke "org.eclipse.swt.graphics.Font.getDevice()" because "font" is null
	at org.eclipse.swt.graphics.GC$SetFontOperation.<init>(GC.java:4955)
	at org.eclipse.swt.graphics.GC.setFont(GC.java:4948)
	at org.eclipse.jdt.internal.ui.text.java.hover.AbstractAnnotationHover$AnnotationInformationControl.lambda$0(AbstractAnnotationHover.java:337)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:268)

To Reproduce
Start an SDK product and create some Java file with a warning, such as an unnecessary warning suppression. I don't have an SWT-only reproducer yet.

Expected behavior
All icons should be shown as expected.

Screenshots
State from a week ago:

Current state:

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

2. Additional OS info (e.g. OS version, Linux Desktop, etc)
   Windows

3. JRE/JDK version
   irrelevant

Version since
I20250722-1800

Workaround (or) Additional context
None known