#43 - Remove fix references from web display and image regression tests

[MartinVazquez1982]

Three independent issues were preventing WizardDialog from opening in web mode:

• Mispositioned dialog: DartDisplay.getPrimaryMonitor() returned a Monitor with uninitialized bounds, placing the dialog at negative coordinates. Aligned it with the existing behavior in getMonitors().
• NullPointerException on image load: In web mode, getImagePath(100) returns null for bundle resources. The DartImage constructor now throws SWTException in that case, letting JFace fall back to its InputStream path instead of crashing.
• Unhandled SVG load failure: With no SVGRasterizer on the classpath, loading SVG icons via imageDataProvider was throwing an uncaught SWTException. Now falls back to a 1×1 placeholder so the wizard opens, even if JFace icons don't render.

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