[Issue 19202] New: deprecated eponymous template prints no warning

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19202

          Issue ID: 19202
           Summary: deprecated eponymous template prints no warning
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: elpenguino+D at gmail.com

```
void main() {
    auto b = X!();
}

template X() {
    deprecated enum X = true;
}
```
Since dmd 2.069, no warning is printed for this example.

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