[clangd] Invalid rename when bringing constructor of templated base into scope

Given:
```cpp
using foo = int;

template
struct A {};

struct B : A {
using A::A;
};
```
Hovering over `foo` and renaming it to `bar` causes this invalid transformation:
```cpp
using bar = int;

template
struct A {};

struct B : A {
using A::bar;
// ^^^
// Should stay as "A", not be changed to "bar"
};
```
Tested with clangd 20.1.4.