unresolved external symbol _D4core8internal5newaa3Foo6__initZ, etc during unittest builds

[dlangBugzillaToGithub]

elpenguino+D reported this on 2024-03-04T02:51:57Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=24428

Description

Compile with -unittest. Fails as of DMD 2.107.1.
```
immutable int[int] foo = [1:2];
unittest {}
void main() {}
```
Several symbols for the unittest in core.internal.newaa are missing:
_D4core8internal5newaa__T5EntryTSQBfQBdQx3FooTiZQx6__initZ
_D4core8internal5newaa3Foo6__initZ
_D4core8internal5newaa3Foo9__xtoHashFNbNeKxSQBqQBoQBiQBfZm
_D4core8internal5newaa3Foo11__xopEqualsMxFKxSQBrQBpQBjQBgZb

Yet another instance of symbols missing due to mismatched app/druntime flags.