ADDITIONAL SYSTEM INFORMATION :
Windows and Java 11+

A DESCRIPTION OF THE PROBLEM :
With JavaFX 21 and newer, the Image constructor throws an IllegalArgumentException for file paths on windows that can be resolved by java.io.File, i.e. a path starting with a drive letter like `C:\` was accepted but is not anymore.

Starting with the jfx21 branch, the lines [1130-1132](https://github.com/openjdk/jfx/blob/jfx20/modules/javafx.graphics/src/main/java/javafx/scene/image/Image.java#L1130-L1132) that accepted existing files are missing.

REGRESSION : Last worked in version 20

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Calling the Image constructor with a valid and existing path to an image file should work as in previous versions:

String pathToAnExistingAndValidImageFile = "C:\\Data\\test.png";
new Image(pathToAnExistingAndValidImageFile);

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The image should be created without throwing an exception.
ACTUAL -
java.lang.IllegalArgumentException: Invalid URL: unknown protocol: c

---------- BEGIN SOURCE ----------
private Image getTestImage() throws FileNotFoundException {
    String pathToAnExistingAndValidImageFile = "C:\\Data\\test.png";
    File existingImageFile = new File(pathToAnExistingAndValidImageFile);
    if (existingImageFile.exists()) {
        return new Image(pathToAnExistingAndValidImageFile);
    } else {
        throw new FileNotFoundException(pathToAnExistingAndValidImageFile);
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
We need to get a now valid url description with either `URI#toString(): String` or `URL#toExternalForm(): String`.

The example code above would work like this:
```
private Image getTestImage() {
    String pathToAnExistingAndValidImageFile = "C:\\Data\\test.png";
    File existingImageFile = new File(pathToAnExistingAndValidImageFile);
    return new Image(existingImageFile.toURI().toString());
}
```

FREQUENCY : always