[clang-tools-extra] [clangd] Handle lambda scopes inside Node::getDeclContext() (PR #76329)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

The CI failure on windows seems irrelevant, so I'm landing it anyway.

```
FAILED: tools/clang/tools/extra/clangd/CompletionModel.h tools/clang/tools/extra/clangd/CompletionModel.cpp
cmd.exe /C "cd /D C:\ws\src\build\tools\clang\tools\extra\clangd && C:\Python39\python.exe C:/ws/src/clang-tools-extra/clangd/quality/CompletionModelCodegen.py --model C:/ws/src/clang-tools-extra/clangd/quality/model --output_dir C:/ws/src/build/tools/clang/tools/extra/clangd --filename CompletionModel --cpp_class clang::clangd::Example"
C:\Python39\python.exe: can't open file 'C:\ws\src\clang-tools-extra\clangd\quality\CompletionModelCodegen.py': [Errno 22] Invalid argument
```

https://github.com/llvm/llvm-project/pull/76329