[lldb][ElfCore] Improve main executable detection in core files (#157170)

This change improves how LLDB's ProcessElfCore plugin identifies the
main executable when loading ELF core files. Previously, the code would
simply use the first entry in the NT_FILE section, which is not
guaranteed to be the main executable, also the first entry might not
have a valid UUID.

1. **Storing executable name**: Extract the executable name from the ELF
NT_PRPSINFO note and store it in `m_executable_name`

2. **Preferential matching**: When selecting the main executable from
NT_FILE entries, prefer entries whose path ends with the stored
executable name

3. **UUID-based lookup**: Call `FindModuleUUID()` helper function to
properly match modules by path and retrieve a valid UUID

Co-authored-by: George Hu <hyubo@meta.com>

0 files changed, 0 insertions, 0 deletions