[Issue 23999] literal suffixes dont mix well with template instantiations

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23999

--- Comment #4 from Puneet Goel <puneet at coverify.org> ---
There needs to be a mandatory delimiter (whitespace) between the limiter, which
is a part of the type (template instance) and the object being declared.

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