`--resolution-strategy lowest` with only lower bound specified

[tpgillam]

If only a lower bound is specified along with "lowest" resolution strategy, the latest version is picked:

See:

• Checking 'lowest' strategy tpgillam/setup-uv#1

The new test fails:

• https://github.com/tpgillam/setup-uv/actions/runs/18555950849/job/52893371298?pr=1

The problem is that the optimisation to pick the latest version if only a minimum bound is specified (from #598 ) is always applied, regardless of resolution strategy.

A separate issue, but a nice optimisation, would be to have a similar fast-path attempted for the lowest resolution strategy. Namely, if there is only a >= lower bound & resolution strategy is lowest, then:

• if the bound itself exists, use that
• otherwise resort to the slower checking of all available versions