fix(builtin.lsp): discriminate 'from' to fix outgoingCalls resolution

[thatnealpatel]

Description

I noticed gopls call_hierarchy ... would produce the expected positional information.

callHierarchy/outgoingCalls resolved incorrect positions for telescope.nvim and neovim.

This should be reproducible for any invocation in any file.

Type of change

Bugfix (non-breaking, I believe).

How Has This Been Tested?

Verified in editor. I did not find existing tests for which to add a case.

See neovim/neovim#39284

Configuration:

NVIM v0.10.4
Build type: Release
LuaJIT 2.1.1713484068

PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)