eglot-help-at-point doesn't exist anymore

[non-Jedi]

Readme shows eglot-help-at-point displaying docstrings, but that functionality was removed from eglot (see e.g. joaotavora/eglot#531). Instead you're just supposed to use eldoc

But eldoc by default seems to only shows the result of the textDocument/signatureHelp reply while entirely ignoring textDocument/hover (where the docstring is located). The intended solution seems to be to customize eldoc-documentation-strategy, but doing so results in a lot of noise in the echo area. Not sure what the best path forward is here.