fix(lsp/diagnostic): use diagnostic provider identifier for code actions #38401

Problem:
f9b2189b287a14478546da72b7ecdfd3afe981c7 started using namespaces
for pull diagnostics that look like this `<id>:<identifier>`.
`vim.lsp.buf.codeaction` passes `true` instead of an identifier
to `vim.lsp.diagnostic.get_namespace`, resulting in a namespace that
looks like `<id>:nil`. The end result is that none of the diagnostics are
passed to `textDocument/codeAction` request. Because of that server
might not send any code actions back. For example, eslint lsp responds
with an empty list of actions if it receives no diagnostics.

Solution:
use `_provider_foreach` to collect diagnostics from all `identifiers`
and use that identifier to get a namespace instead of `true`.

0 files changed, 0 insertions, 0 deletions