v1: empty recommendation is warning now

[lzap]

This error is cluttering glitchtip there are over 2k events and counting. This does not need to be an error:

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
internal/v1/handler_recommend_package.go	0.00%	1 Missing :warning:

Files with missing lines	Coverage Δ
internal/v1/handler_recommend_package.go	53.57% <0.00%> (ø)

[ezr-ondrej]

/retest