fix(lua): don't strip debuginfo in precompile module #39191

Problem:
debug.getinfo on bytecode module/func don't give you detail source info.

Solution:
- Use `loadstring`+`string.dump` to replace LUAC_PRG(`luac`/`luajit -b`)
- `string.dump(…,false)` to generate non-strip version bytecode
- `loadstring(…,fname)` to specify the full source name

BEFORE:

    $ nvim --clean +'=debug.getinfo(vim.fn.maparg("]<Space>", "n", 0, 1).callback, "Sl")' --headless +q
    {
      currentline = -1,
      lastlinedefined = 456,
      linedefined = 452,
      short_src = "?",
      source = "=?",
      what = "Lua"
    }

AFTER:

    $ nvim --clean +'=debug.getinfo(vim.fn.maparg("]<Space>", "n", 0, 1).callback, "Sl")' --headless +q
    {
      currentline = -1,
      lastlinedefined = 456,
      linedefined = 452,
      short_src = "/home/xx/b/neovim/runtime/lua/vim/_core/defaults.lua",
      source = "@/home/xx/b/neovim/runtime/lua/vim/_core/defaults.lua",
      what = "Lua"
    }

0 files changed, 0 insertions, 0 deletions