Fix preview thumbnailing for images with ampersand (&) in file name #16609
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What does it do?
URL encodes the src property used in building the image TV type’s phpthumb preview link.
Why is it needed?
The unencoded property was mangling the request when an ampersand was present in the file source path, preventing the creation of preview images.
How to test
Related issue(s)/PR(s)
For 3.x:
Resolves #14264
Resolves #13412