[clang-tidy][C++20] False negative modernize-use-emplace when passing init list

[chrchr-github]

#include <string>
#include <vector>

struct S {
    std::string s;
};

void f(std::string a) {
    std::vector<S> v;
    v.push_back({std::move(a)}); // no warning
}

https://godbolt.org/z/4jrj1M6hY
With C++20, v.emplace_back(std::move(a)); should be used.

[llvmbot]

@llvm/issue-subscribers-c-20

Author: None (chrchr-github)

~~~c++ #include <string> #include <vector>

struct S {
std::string s;
};

void f(std::string a) {
std::vector<S> v;
v.push_back({std::move(a)}); // no warning
}

https://godbolt.org/z/4jrj1M6hY
With C++20, `v.emplace_back(std::move(a));` should be used.
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