[clang-format] lambdas aligned wrongly with C++ 20 aggregate initialization

[Zamundaaa]

As a minimal example, with

LambdaBodyIndentation: OuterScope

the desired formatting of a relevant code snippet would be

struct Callbacks {
    void (*done)(void *data);
};
const Callbacks callbacks = {
    .done = [](void *data) {
        // code
    },
};

but instead the result is

struct Callbacks {
    void (*done)(void *data);
};
const Callbacks callbacks = {
    .done = [](void *data) {
    // code
},
};

For completeness, the config we're using is https://invent.kde.org/plasma/kwin/-/blob/ad4f49774aa8f2bebf2b340608348e343fed6166/.clang-format

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: Zamundaaa (Zamundaaa)

As a minimal example, with ``` LambdaBodyIndentation: OuterScope ``` the desired formatting of a relevant code snippet would be ``` struct Callbacks { void (*done)(void *data); }; const Callbacks callbacks = { .done = [](void *data) { // code }, }; ``` but instead the result is ``` struct Callbacks { void (*done)(void *data); }; const Callbacks callbacks = { .done = [](void *data) { // code }, }; ```

For completeness, the config we're using is https://invent.kde.org/plasma/kwin/-/blob/ad4f49774aa8f2bebf2b340608348e343fed6166/.clang-format